Collision groups not working

broken

why cant i tick the NPC collision group to collide with default

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Why don’t you try to set the collision groups with scripts? You have to create a script in ServerScriptService and you will need to learn about the PhysicsService. Basically PhysicsService sets the collision groups and you can modify them by setting Collidable to true, or false. I can give you an example if you need more help.

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thanks for the help but i shouldn’t have to learn physics to tick a box, why is roblox like this

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I personally do not use the ROBLOX Collisions tool. It’s a little strange and confusing. It’s easier by setting them on a script. Oh and PhysicsService is not really hard to learn trust me

If you restart studio when it happens it should work again

Thanks bro, that game was published and I left the studio that made it 4 months ago

It all works perfectly fine u are simply not reading it well.
It is simply like this for effectiveness.
U can tick it by going on the top line and ticking it there.