New Gnus user: trouble configuring Group buffer

[Bastre]

All,

I'm brand new to Gnus but not new to Emacs.  
I'm having trouble configuring the Topic/Group buffer to 
display groups how "I" see them.

Desired outcome- see groups based upon the following hierarchy:
[Summary -- #messages]
  [All Email -- #emails]
    [Mail.Personal -- #]   <--- email split; based upon senders
    [Mail.Travel -- #]      <--- email split
    [Drafts -- #drafts]
    [Home -- #emails]
      [BR@GM  -- #emails]
        [Inbox]
        [Deleted]
      [B@PD -- #emails]
        [Inbox]
        [Deleted]
    [Work -- #emails]
      [B@MyCompany]
   [Lists -- #messages]
     [name.of.gmane.list1]

=========
Here's a layout of my .gnus:

(setq gnus-select-method
      '(nnimap "BR@GM"
              (nnimap-address "imap.server1.com")
               (nnimap-server-port 993)
               (nnimap-stream ssl)
               (nnimap-authinfo-file "./authinfo")))

(setq gnus-secondary-select-methods
    '((nnimap "BR@MyCompany"
              (nnimap-address "work.mail.server")
              (nnimap-server-port 993)
              (nnimap-stream ssl)
              (nnimap-authinfo-file "~/.authinfo"))
      (nnimap "B@MyDomain"
              (nnimap-address "imap.server2.com")
              (nnimap-server-port 993)
              (nnimap-stream ssl)
              (nnimap-authinfo-file "~/.authinfo"))))

(setq gnus-summary-display-arrow t)  

Thank in advance for your help!!

--Bastre