Hi all...please help! I'm new to the wonderful world of VBA 
I have a spreadsheet with many pick lists. Some of these should only allow a single item to be selected, some should permit multiples.
I have the code to allow multiples to be selected, and have got it working so that it selects a single column only. Problem is, I need to it allow multiples in 3 columns, but not the rest. Any help would be appreciated! At present I need it to allow multiples on columns 11, 12 and 13, but can only get it working on a single row (11).
oldVal = Target.Value
Target.Value = newVal
If Target.Column = 11 Then
If oldVal = "" Then
'do nothing
Else
Thank you in advance!

I have a spreadsheet with many pick lists. Some of these should only allow a single item to be selected, some should permit multiples.
I have the code to allow multiples to be selected, and have got it working so that it selects a single column only. Problem is, I need to it allow multiples in 3 columns, but not the rest. Any help would be appreciated! At present I need it to allow multiples on columns 11, 12 and 13, but can only get it working on a single row (11).
oldVal = Target.Value
Target.Value = newVal
If Target.Column = 11 Then
If oldVal = "" Then
'do nothing
Else
Thank you in advance!