I am hoping someone might be able to point me in the right direction
regarding a feature I have no idea what syntax to use, or where to place it.

I have a form created in VBE. Within this Form is a Frame that has three
Check Boxes. Also on the Form, but not in the Frame, I have a Command Button.

I want the Command Button to be disabled unless all three Check Boxes are
ticked.

Any help would be very gratefully received.