If you work with a big number of projects or workgroups, Tags may be exactly what you are looking for. You can easily search for a group by tag with the help of the filter located in the Workgroups section.
You can add tags to new workgroups via group creation form or to the existing one via Actions > Edit Group option. Open More tab & find Keywords field. You can add several keywords at once, in this case the workgroup will appear under each tag you will click on.