Permissions based on groups are available on the Professional plan. See all our plan details here.
You must have set up SCIM group sync with your SSO/SCIM provider and Tettra in order to turn this on for your team.
Click your team's name on the upper left corner of the screen to access the dropdown menu. Click Team settings.
On the team settings page, go to User groups - you should see the groups from your SSO/SCIM provider synced here.
Navigate to or create a new category and click Edit category from the kebab menu:
In the category settings, make sure your category is set to Only certain people and groups. Click the dropdown to see a list of individual users and groups to pick from.
Once you're done, click Update category, and your permissions will be saved.