Disclosed techniques include a computer-assisted device having an input control, a functional structure, and a processing system. The functional structure is configured to include a repositionable structure, and the repositionable structure is configured to support an instrument. The processing system is configured to receive a movement command from the input control, update a pose of a proxy based on the movement command and a proxy constraint, and cause the functional structure to move based on the updated pose of the proxy. In some embodiments, the input control controls a pose of a virtual leader device. The processing system updates a pose of a proxy based on the pose of the virtual leader device, updates a pose of a virtual follower device based on the updated pose of the proxy, and causes the functional structure to move based on the pose of the virtual follower device.