Set a Force Threshold. Any force platform signal below this threshold will be set to zero.
Set_Force_Platform_Threshold ! /THRESHOLD=20 ! /SET_AS_DEFAULT=FALSE ;
This value may also be set manually by going to Force → Modify Minimum Force Platform Value
If using this command in a pipeline script, do not forget to use the RECALC command (listed under File Management category in the pipeline workspace) to update force/kinetic signals.