Last XX Notes for Groups?

Good morning!

I've been using the 'Last XX Notes' table for nodes (just to leave notes for other techs about recurring issues, like somebody turning it off every third Wednesday or so forth) but was trying to find an equivalent feature for groups.  I've been organizing different sites into groups already for maps, and it would be handy if I could put some site-wide details on that page too, such as contact information for the building power/maintenance, or the on-site technician, etc.  I tried adding it but it seems to be a node option only - does anybody know of a way to get this table into the groups, or if there is another table that could do the same thing?

Thanks!