There are a few ways to find clients in XPM
Click on Clients on the menu bar to bring up the full list of clients.
Then use the Search box on the right
Click on the magnifying glass at top right and enter the search terms. A list of matches will display, including client groups at the bottom.
On the clients screen, click on the All Clients title to bring up the Filtering options
Choose the filter you want, or create a new one
There are a limited number of filtering options
You can add a search condition for the filter options – eg filter just companies