how to create Drafts, Junk, Sent, Trash folders after user already created

Hello Dovecot,

Do to a misconfiguration, I have a bunch of users who do not have the standard folders.

I can create a routine to cycle through the users and look for the folders and run a command if there is one.

Is there a way to create the proper namespace for a user after the user has already been created?

Thanks in advance.