The way that I accomplished this, was to use the q2 db add_nav_node endpoint:

> q2 db add_nav_node
Which Type of Nav Node?

    1) Route
    2) DirectLink
		
Please make a selection and press Return: 1

Which menu should this nav node live under? (Leave blank to insert at top level nav)
    --Online Top Level Navigation Menu--

    1) Home
    2) Home
    3) [redacted]
    4) [redacted]
    5) [redacted]
    6) [redacted]
    7) not used
    8) [redacted]
    9) [redacted]
    10) [redacted]
    11) not used
    12) not used
    
    Page 1 of 3. Select 'n' for next page.

Please make a selection and press Return: 

-
---Online Top Level Navigation Menu----
1) -> here
        Home
2) -> here
        Home
3) -> here
        [redacted]
4) -> here
        [redacted]
5) -> here
        [redacted]
6) -> here
        [redacted]
7) -> here
        not used
8) -> here
        [redacted]
9) -> here
        [redacted]

Where should this nav node appear in the submenu?: 5
What would you like to put in the Route column?: 
Which Icon should be displayed? (Leave blank for default)
    --Current list of icons--

    1) landing-page (Home)
    2) landing-page (Home)
    3) reports ([redacted])
    4) transactions ([redacted])
    5) news ([redacted])
    6) services ([redacted])
    7) message-center ([redacted])
    8) transactions ([redacted])
    9) transactions ([redacted])
    10) commercial ([redacted])
    11) branches ([redacted])
    12) services ([redacted])
    
    Page 1 of 3. Select 'n' for next page.

Please make a selection and press Return: 
Nav item text?: Top Level Nav Item Example

I hope that helps.