To set a provider panel size limit:
Click on 'Admin'
Click on 'Providers & Patients'
Click 'Edit' next to the provider's name (or '+New Provider' if the provider has not been created in Hint yet)
Under 'Panel Size Limit' enter the max number of patients the provider will treat
If you would like the provider to automatically disappear from online signup once their panel size limit is met, select the option to 'Auto determine from panel size'