grouped TVs

I mean to create a TVs linked to another one, IE a radio button next to a picture field - for each picture fields of the template- how can I create a group of TVs? Since Evo a lot has changed, how is it called, what am I looking for?

PS: also is there a way to reorganised/ arrange / order/ TVs of a template for UX purposes?

You might want to look into MIGX http://rtfm.modx.com/extras/revo/migx

Organising TVs can be done by assigning them into categories through the Elements tree, as well as by editing them and updating the sort order.