Hi I want to place in my character a business suit with a vest and a jacket. When I place the jacket and the vest is already in the character in character creator 3, the best disappears. So I cannot place both togehter. Any tip

just go to modify panel then press button conform then press button cloth layer setting then push button rearrange order to setting 

Hi, thanks for trying to help me. But It doesn't work out. If you check jacket, wastcoast that in England is called vest. It hast the same category of a jacket. Because of that I cannot use both at the same time. But It must exist anyway. That I don't know it. Thanks

Every piece of clothing on a given character must have a unique layer number. No two of the same layers can be applied to a character.
So you need to to change that number either on a jacket or on a vest in cloth layer settings:

https://manual.reallusion.com/Character_Creator_3/ENU/3/Content/Character_Creator_3/3/08_Cloth/Customizing_Clothing_Layers.htm
https://manual.reallusion.com/Character_Creator_3/ENU/3/Content/Character_Creator_3/3/08_Cloth/Assigning_Layer_for_Compatibility.htm

Thank you so much I got it now!!!