Imap root folders

[A[L]C]

Hi all,

I have a fastmail.fm account with multiple email addresses. I am setting these up for access via imap. I have a folder structure like:

Inbox
Sent
Dawn
--Makeup
---Models
---Photographers
Mailers
Hotukdeals


etc.

I would like to be able to set Dawns account so she can see the Dawn folder with all its subfolders. I currently have the root folder set to Dawn, but this only shows the Dawn folder and not the subfolders.

Can anyone advise?