advice re subform and linked table data

[OBP]

Thanks for the offer, but I retired 13 years ago, I just do this forum stuff to keep my brain active.

I no longer use menus because they slow doiwn the users, I use multiple tabbed forms, I will post one, it has no data as it was very sensitive.

The one that I wanted to show you is too large, it is 8.4Mb zipped, so I have taken a print screen of it instead.