restrict user input in adjacent cells if one cell is filled; (excel is used on mobile phones)

[01's]

Hi Everyone,

Hope you are dong fine.

I have an Excel sheet where there are three drop downs with input 1 and blank in each drop down from G1 to I1

Initially all cells are blank. If user selects 1 in one of the cells then excel should be able to restrict data input in other 2 cells.

I have written a worksheet change event for this and that works fine. But I am looking for some other excel solution as my users might also use the excel on their MOBILE phone and VBA won't run on mobiles.

Thanks for all your help.