How to hide cells depending on a tickbox ?

Hi,

I would like to make a form where the user has to fill out a check list with several tickboxes.
To answer a question they tick Yes or No.
If you tick Yes I'd like several other questions to pop up, and/or in case of No to dissapear or get inactive.
Any help on how to do this ?
Cheers,

Simon

just a normal excel sheet designed as a form

sure, here is the example:

Thanks for your help