If a deployed application or module is enabled, it is accessible by clients. If it is disabled, it is still deployed but is not accessible by clients. By default, when you deploy an application or module, it is enabled because the Enable on All Targets radio button is selected by default.
In the tree component, expand the Applications node.
Expand the node for the application type.
To enable a deployed application or module, select the checkbox next to the deployed application or module.
To enable an application on a single target:
Click Enable or Disable.
These buttons enable or disable the application on all targets.
enable and disable