I would write a Form Method to do this and call this method from each button click event.
You would have a Parameter sent to the Method so you would know what to do.
For example, call it Command_Button_ShowandHide
You would call it like this : thisform.Command_Button_ShowandHide(1,4,6)
The 1,4,6 would be parameters of the command buttons to turn OFF.
The Method would be:
lParameter tc1off, tc2Off, tc3off etc,,,,
Then have a DO CASE statement to turn off the individual command buttons in code.
One Method many uses.