# Recurring tasks using Gantt Charts and Conditional Formatting

#### MarisaRaucci

##### New Member
Hi,
I am trying to come up with a formula to calculate biweekly dates in excel, using conditional formatting. Ideally I would like to be able to enter the start date and end date, day of week, and frequency, and identify the dates using an X, then a conditional format to shade the X using a specific colour. For example:

Mon 1 OctoberTue 2 Oct
Day of WeekFrequencyProject Start DateProject End Date
Status MeetingTuebi weekly1 October 20211 November 2021X

I would like to be able to set up a formula in in the above table to be able to capture when the biweekly meetings occur, and then place an X in the date it relates to. I am using Excel, and don't have access to Project Management, but I am quite sure that someone can come up with this formula.

thanks
Marisa

#### etaf

##### Well-known Member
you are welcome, glad to have helped

The file will only be on the share for a few days , and then removed , hence why i also included the XL2BB for anyone searching in the future will still be able to see the solution, even without the workbook

### Excel Facts

Does the VLOOKUP table have to be sorted?
No! when you are using an exact match, the VLOOKUP table can be in any order. Best-selling items at the top is actually the best.

#### MarisaRaucci

##### New Member
Hi again, one question I forgot to ask, if I wanted to choose distinguish from the bi weekly and weekly meetings with a different colour, can this be done? I have used conditional formatting so that if there is an X, it use red, but now I'm thinking it would be great if I could use two different colours to do this.

Can this be achieved?

cheers
Marisa

#### etaf

##### Well-known Member
you can do a few things we could change the X to a different value
BUT keeping the X
then we would add 2 rules to conditional formatting
one would check for an X and Bi Weekly - say format RED
and 2nd rule for an X and Weekly - say format Green

Rule 1 = =AND( \$E2="Bi Weekly", H2="X") for Bi Weekly and format Green
Rule 2 = =AND(\$E2="weekly", H2="X") for Weekly and format Green

Gantt-ETAF.xlsx
ABCDEFGHIJKLMNO
1Day of WeekFrequencyProject Start DateProject End DateWed 01/09/2021Thu 02/09/2021Fri 03/09/2021Sat 04/09/2021Sun 05/09/2021Mon 06/09/2021Tue 07/09/2021Wed 08/09/2021
2Status MeetingMonbi weekly1-Sep-211-Oct-21     X
3Tuebi weekly1-Oct-2114-Oct-21
4Wedweekly1-Sep-2131/9/21X      X
5Thubi weekly1-Sep-2131/9/21 X
6Fribi weekly1-Sep-2131/9/21  X
7Monweekly1-Sep-2131/9/21     X
8Tuebi weekly1-Sep-2131/9/21      X
9Wedbi weekly1-Sep-2131/9/21X
10
gantt (Mix)
Cell Formulas
RangeFormula
I1:O1I1=H1+1
H2:O9I2=IF(AND(WEEKDAY(I\$1,2)=SWITCH(\$D2,"Mon",1,"TUE",2,"Wed",3,"Thu",4,"fri",5,""),I\$1>=\$F2,I\$1<=\$G2,IF(LEFT(\$E2,2)="Bi",COUNTIF(B2:H2,"X")=0,COUNTIF(H2,"X")=0)),"X","")
H10H10=IF(AND(WEEKDAY(H\$1,2)=SWITCH(\$D10,"Mon",1,"TUE",2,"Wed",3,"Thu",4,"fri",5,""),H\$1>=\$F10,H\$1<=\$G10,COUNTIF(A10:G10,"X")=0),"X","")
Cells with Conditional Formatting
CellConditionCell FormatStop If True
H2:AR11Expression=AND(\$E2="weekly", H2="X")textNO
H2:AR11Expression=AND( \$E2="Bi Weekly", H2="X")textNO

#### MarisaRaucci

##### New Member
Thank you I will give that a go on Mon and let you know how I go, have a great weekend.

Cheers
Marisa

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