Solved Adding "Add-ins" menu to a custom ribbon (1 Viewer)

[KitaYama]

I have a custom ribbon for my apps with an "Admin" tab that's only available when a developer logs in.
I'm trying to add the "Add-Ins" menu, but I can't find the idMso for Add-Ins.

Does anyone know Add-Ins' idMso? (the following menu marked in red)

Thanks.

 

[KitaYama]

Found it.

<group idMso="GroupAddins" getVisible ="GetVisible" >

Thanks