Folder List & Multiple Accounts

[HannibalAnthrope]

I installed the plugin additional_imap - got it working fine.   
I noticed that the screenshots the author posted have a feature I can't seem to get working on mine. 
The folder list at the left includes the primary account and the 2 additional accounts he added. 

I've been trying figure out how to get Shared Folders working with ACL etc..etc.. but I'm stuck with a the global_acs files not being found so I can't even get to the point of trying to share the folders.

Has anyone else gotten that folder list to include multiple accounts?