You can edit roles in two ways: by member or by role/permissions.

To edit a member's roles and permissions, go to the Members menu and edit a member. In the edit window, select the Roles and permissions tab.

Select the desired roles and permissions for this member and then click the Save button.

To edit a role or permission for multiple members, go to the Settings menu and select the Roles and permissions tab.

On this screen, you will see a list of all members assigned to each role and permission. To edit a role or permission, click the Edit button next to the desired role or permission.

Select the members to whom you want to assign this role or permission and then click the Save button.