Use the macro in post #5


If they were 'linked' Option Buttons then selecting OB1 would automatically unselect which ever was previously selected from OB2, OB3, or OB4 (1 combination)

These are Toggle Button and TB1 and/or TB2 and/or TB3 and/or TB4 could be pressed (16
combinations
)

Using the 4 Booleans tracks the status so that when one toggle button is selected (OnAction), the other toggle buttons can be turned off (GetPressed)

Probably other ways to do it, but I've found the KISS is best