Hello Wmossuk,
The following is based on the following assumptions:
1. You have 3 worksheets named Main, Coll A and Coll B
2. Coll A and Coll B mean the worksheets of your colleagues A and B respectively.
You are goiing to get the below sample by in putting the vlookup formular =IFERROR(VLOOKUP(A2,'Coll A'!A:A,1,0),"") in the cell below "Coll A" and =IFERROR(VLOOKUP(A2,'Coll B'!A:A,1,0),"") in the cell below "Coll B". copy down to view the outcome.
<TABLE style="WIDTH: 205pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=273 border=0><COLGROUP><COL style="WIDTH: 87pt; mso-width-source: userset; mso-width-alt: 4242" width=116><COL style="WIDTH: 60pt; mso-width-source: userset; mso-width-alt: 2925" width=80><COL style="WIDTH: 58pt; mso-width-source: userset; mso-width-alt: 2816" width=77><TBODY><TR style="HEIGHT: 15.75pt" height=21><TD class=xl72 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; WIDTH: 87pt; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 15.75pt; BACKGROUND-COLOR: transparent" width=116 height=21>Main worksheet</TD><TD class=xl73 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: windowtext; WIDTH: 60pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent" width=80>Coll A</TD><TD class=xl74 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext 1pt solid; BORDER-LEFT: windowtext; WIDTH: 58pt; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent" width=77>Coll B</TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl66 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1123</TD><TD class=xl71 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD><TD class=xl70 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: #ece9d8; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1124</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1125</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1126</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1127</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">Kjg1127</TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1128</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">Kjg1128</TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1129</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">Kjg1129</TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1130</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">Kjg1130</TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1131</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">Kjg1131</TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1132</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">Kjg1132</TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1133</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">Kjg1133</TD></TR><TR style="HEIGHT: 15pt" height=20><TD class=xl67 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 15pt; BACKGROUND-COLOR: transparent" height=20>Kjg1134</TD><TD class=xl68 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"> </TD><TD class=xl69 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent">Kjg1134</TD></TR><TR style="HEIGHT: 15.75pt" height=21><TD class=xl65 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext 1pt solid; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 15.75pt; BACKGROUND-COLOR: transparent" height=21>Kjg1135</TD><TD class=xl63 style="BORDER-RIGHT: windowtext 0.5pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent"> </TD><TD class=xl64 style="BORDER-RIGHT: windowtext 1pt solid; BORDER-TOP: windowtext; BORDER-LEFT: windowtext; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent">Kjg1135</TD></TR></TBODY></TABLE>
Regards