Drop zone "dropper" not respecting snapping

I am using a plug-in (mVideoWall) which has generators which sometimes have 20+ drop zones.

I'm producing virtual ensemble music videos, so it's important that all individual videos stay in exact sync.

I currently have all my individual videos stacked in the timeline.

I click the first drop zone "drop area," then go to my timeline to find the first video. I have to click the starting point that should be dropped into the drop zone. However, this function doesn't seem to respect snapping, which I have enabled. I need it to snap. Otherwise all my drop zones will begin at +/- my margin of error when clicking.

Is there a way to get snapping to be active for drop zone dropping?

Or another way to make sure that all the clips I drop into a generator's multiple drop zones can stay in sync?