Go to the Commons tool.
![select Commons](https://media.screensteps.com/image_assets/assets/004/949/699/original/15b03d68-c568-4a43-98a1-fee316d2545e.png)
Select the Commons tool from the Tool Menu of your site.
Select Permissions.
![select Permissions](https://media.screensteps.com/image_assets/assets/004/949/701/original/16b799e0-430b-4629-b559-47be3f8d1d7d.png)
Select Permissions from the Actions Menu.
Select your permissions.
Select permissions based on role. Check the checkbox next to any permission to enable it; uncheck the checkbox to remove a permission.
Select Save.
![select Save](https://media.screensteps.com/image_assets/assets/004/949/705/original/e89b9162-6f10-4f76-b511-8dbc1155d79d.png)
Select Save to save your modified permissions.