It is easy to restrict access to content within the Reservoir system. If you have more than one member group, you can control what groups have access to content throughout the system.
To do this at the content level, simply login to the Reservoir admin area and select the content item you would like to update.
Next you need to remove groups from the list of groups that have access to the content. You will see a link in the Who has access? area on the page. If you click the link, it will display a list of all the active member groups.
You simply need to UNCHECK the boxes for groups who should NOT have access to the content. Then save the content.