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.
To enable a deployed application or module:
These buttons enable or disable the application on all targets.
Equivalent asadmin
commands: enable
and disable
To enable an application on a single target
See Also: Managing Application Targets