Controls whether the unit is enabled. System units are enabled for the selected install target; user units are enabled in the selected user's systemd manager.

For user units, enabling the unit is separate from linger. Enable linger when the unit should be able to start at boot or keep running after the user logs out.

This option is not shown for unit types or unit file states that systemd cannot enable directly, such as transient, generated, scope, or device units.