An Extension or Plugin
Controls are extensions/plugins for Cockpit and allows to extend Cockpit and let users build missing features for Cockpit or allow Cockpit to control currently not supported applications. The best is that controls can be created in Cockpit without any developer or coding skills. Creating Controls is super simple and can be done by any user.
12 Actions Per Control
Each Control can have up to 12 actions. Those actions can either be simple (like launching an app) or complex (like allowing to perform operations on multiple documents). Each action can also give feedback via display or an overlay.