In yesterday’s post, I mentioned custom SharePoint permission levels. Here is how to create one.
From the landing page of your site (default.aspx), click on “People and Groups”, then click on “Site Permissions” under “All People”. Click on the “Settings” menu, then select “Permission Levels”.
Now click “Add a Permission Level”. Give your custom permission level a name, an optional description (I find it useful to describe the permissions that this permission level grants, and possibly which assumed permissions that this level does not grant).
Now is the fun part. You get to choose which permissions to grant, and which to exclude, for this permission level. There are many different permissions you can choose from. They are described in this Office Online page.