Hide or gray out a field in tab

For Developers
1

Greetings all!!

I am looking to see if there is a simple way to show or not a field depending on the choice made in another field.

Or any idea:

If I've MB_Register = "BIT" I need only the field Payload_Bit
or else, I need only the field Payload_Ana
I never need both on one line.

optional_option_in_tab_section

Thanks!
Rémi