How to put menu links from different parents on the same level?

This should be straightforward, but I can't get it to work with Wayfinder.

I have normal non-grouped documents (public), plus documents assigned to one or both of two document groups: Admin group and Client group (both private groups).

I have my docs arranged like this to make management easier (eg, some docs have the same name in the two groups), (group membership and IDs in brackets):

Home (1) (public)
About (2) (public)
Login (3) (public)

Admin Docs (4) (container, Admin group)
- Home (5) - (Admin group)
- Manage Products (6) - (Admin group)
- Manage Orders (7) - (Admin group)
- Reports (8) - (Admin group)

Client Docs (9) (container, Client group)
- Home (10) (Client group)
- Products (11) (Client group)
- Product Details (12) (Client group)
- My Orders (13) (Client group)

View Profile (14) (Admin & Client groups)
Update Profile (15) (Admin & Client groups)
Change Password (16) (Admin & Client groups)

Containers are hidden from menus. All other docs visible.

I want two menus, one for Admin users and one for Client users.

Admin users should be able to see the normal docs and the Admin docs (docs: 1,2,3, 5,6,7,8, 14,15,16).
Client users should be able to see the normal docs and the Client docs (docs: 1,2,3, 10,11,12,13, 14,15,16).

I just want all the doc links to show on the same level on the menu. No sub menus.

I have tried various configurations based on the info in the Wayfinder docs, but can only ever get links from a single parent (0, 4 or 9) at any one time.

Can anybody suggest how I do this?

Wayfinder does allways build the menu as defined with the Resource-tree.

Why not using getResources, or pdoResources to build the menu?

Hi Bruno,

thanks for the suggestion. I may go down that route. First I think I will simply create separate Wayfinder calls, one for each document group, and add them as appropriate to the templates. I have actually done it this way before.