I am sure there is a very simple way to do this but I am having a problem getting there. Below I am designing a layout for a remote engineer program running on filemaker go 15. What I need this to be able to do is ensure that either a signature is provided or a reason is given for there being no signature. So validation would be a three step process.
First it checks if there is a signature in the container field - if there isn't it then checks that one of the checkbox is ticked. If Tenant unable to sign is ticked a reason must be given in the box below and if not I need a popup that tells the engineer to fill in a reason.