In the Groups section of your Portfolio, at the top you will find two formats to view your groups: list or mosaic.
List view
In this view you can view and organize your groups by name, number of companies, creation date, and last update. Click the pencil icon to change the name, write the new name and press enter.
Tile view
In this view you will see the groups as a mosaic, it will show the name of the group, the number of companies, the last update and who was the user who created that group. Click the three dots, select the Change name option, and click the green check button.