@Samantha Isin‚ this is what we are doing currently (groups and layout templates), so good to hear we're not the only ones.
Support recommends using Companies and the "only visible within Company" setting in layout templates. We sometimes need some cross-company work, in which case Support recommended duplicate layout templates for those users that have the "restricted to Company" turned off.
I'm exploring the pros and cons of each method vs. complexities:
--Using Groups seems less complex, but I am curious about pitfalls. I know search is kinda odd, for example.
--"Within Company" restrictions seems more bulletproof, but cross-company work seems to create layout template complexity and anything we can do to reduce system management overhead is a plus since none of us sysadmins are full-time on WF; we have other systems to manage. So reduced workload is a plus.
Keep it coming everyone!