A telescoping assembly for use on a patient support apparatus. The telescoping assembly comprises an accessory and a telescoping support slidable to extend the accessory. A locking device releasably holds the telescoping support in the extended position. The accessory is manually movable by a user between a stowed position and a use position. The accessory comprises a deactivator portion operable to deactivate the locking device remotely in response to the user manually moving the accessory relative to the telescoping support toward the stowed position.