Hi,

what I want to achieve is actually really easy: A grid is pinned by all 4 corner points until Frame 30, where 2 corner points are released so the cloth falls down and is only hanging on the two remaining pins.

I know you can't animate the group since it's only read on the first frame so I guess I have to do it with constraints somehow but I couldn't figure out how :/

Start off with your pin group set to Stopped, not Permanent.
Dive into the solver and add a geometrywrangle connected to FORCE.
You'll have to view which point numbers you have pinned, but here is the code you place in the geometrywrangle to "un-stop" them. Once they are "unstopped" they are no longer pinned.

In my example, the corners are @ptnum 1 and 62.

Enivob
Start off with your pin group set to Stopped, not Permanent.
Dive into the solver and add a geometrywrangle connected to FORCE.
You'll have to view which point numbers you have pinned, but here is the code you place in the geometrywrangle to "un-stop" them. Once they are "unstopped" they are no longer pinned.

In my example, the corners are @ptnum 1 and 62.

if(@Frame > 29){
    if (@ptnum == 1){i@stopped = 0;}
    if (@ptnum == 62){i@stopped = 0;}
}

Thank you so much! Exactly what I needed!