Adding a new menu level to Navigator

Hi, please can anyone help.  I'm fairly new to M3 administration and need to add a new level to our main Navigator menu if its possible.

I want to add a new level into the menu, not a level under m3 transactions but a separate menu.  For example I currently have:

• Admin Tools
• M3 Transactions
• Mashups

I want to add another level such as:

• Admin Tools
• M3 Transactions
• Mashups
• Support Links

So if I wanted to add the Support Links menu do you know how I can do it?  I can see how to add MNU options “inside” the M3 transactions element but I want it as a new menu as this will hold links to training materials and important documents.

Thanks in advance.