Beneath the tab Portlet rights you can assign rights to a certain role. The user having a certain role will then be able to see the selected portlets in the portlet selectors. All portlets for a certain SiteVision license will be listed here.
There is also an option to select all portlets by clicking the button Select all or doing the opposite by clicking Unselect all. Portlets with a test license are red in the list.
Observe! The rights are connected to adding new portlets. If a user only has rights to the text portlet he can still edit a news portlet on a page that the user has access to.