An end-effector assembly includes a master boom, a frame rail coupled to the master boom, at least one branch rail movably coupled to the frame rail by a branch lock, and a swing arm movably coupled to the at least one branch rail by a swing lock. The swing lock includes a clamp configured to movably secure the swing arm to the branch rail. A pivot shaft extends through the clamp and the swing arm and is configured to rotationally secure the swing arm to the clamp. A swing plate is secured to the pivot shaft and is configured for engagement with a configuration tool. Further, a locking fastener extends through the swing plate and into the pivot shaft. The locking fastener is configured to lock and unlock the swing lock in position along the branch rail.