f i create a group of vertices for hair particle density nothing happens, here the video
i do something wrong?
Have you scaled the model?
Do you have any modifiers? → Try checking “use modifer Stack” in Partical system settings > Emmission > Source. Or if that does not solve it, maybe appling helps?
have you checked what happens when you select " Use modifier stack"? ( see your screen shot)
thank you tachtian, i guess i’ve to weight the group to make it grow hair, now i understand!