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. Click Add field > tick Tag.
You can add tags to new workgroups via group creation form or to the existing one via Actions > Edit Workgroup option. Open More tab & find Tags field. You can add several keywords at once. In this case, the workgroup will appear under each tag you will click on.