Blitzkrieg

Hi, I'm trying to adapt some costumes to the interlude client. I include the accessory part as well to the costume mesh, however this way I can't change the hairstyle and therefore hair interferes with the accessory (for example the black hoodie of the assassin costume or the crown of the king costume). I understand how a single accessory can affect hair, but how can a costume with integrated accessory affect it?

Search for the npcs that I put in the red box, they are tent-like (accompanied with a flag)