I need to find out how I can better sort my buddypress

Hello,
I need to find out how I can better sort my buddypress groups. At the moment, I have "alphabetical, new reg, active " options for sorting groups. If there a way i can add a tag, taxonomy, field or whatever to sort these groups according to these tags or metadata. will a plugin do most of the work, or will I need too make a development from scratch ?
Thanks in advance,
Hervé