There is a new script command "SelectEx" that features n-th selection as well. Find it here: Command: SelectEx (extended Select command)
To select every 5th item, create a button and run this:
SelectEx NTH=5
There is a new script command "SelectEx" that features n-th selection as well. Find it here: Command: SelectEx (extended Select command)
To select every 5th item, create a button and run this:
SelectEx NTH=5