In asymmetrical signs, the non-dominant hand functions as location for the articulation with the dominant hand. One example is the sign appointment.
appointment
Within the sign appointment solely the dominant hand performs the movement. In some asymmetrical signs in DGS, both hands stay in contact and move jointly. One example is the sign show illustrated below.
show
A further phonological restriction implies that only the dominant hand may perform a secondary movement in asymmetrical signs as in the following example.
iconic