shower tile tray and semi-frameless screen help

Hi guys,

I'm in the process of planning my bathroom renovation, and will be undertaking most of the work myself. I have decided to go with a shower tile tray purely for convenience (not needing to screed to waste. although from reading here, sometimes a nightmare with leaks?) ; perhaps something like a 'showerline tile over tray'.





One thing I'm having trouble figuring out is how to attach the semi-frameless shower screen. Am I correct in thinking that the shower frame will be screwed into the wall, but only siliconed/glued onto the floor? (or does it need to be screwed into the floor as well?) Another question is, where would you position the frame - would it sit inside of the shower tray, outside, or right in the middle?

Also, should I add an aluminium angle around the outside of shower tile tray as a waterstop? (protruding a couple of mm above floor tiles) At the moment, I cant see what would stop water seeping from the shower area into the main bathroom area without some sort of lip as a waterstop...

Cheers