Advanced Select (subitems)

Hello,
Is it possible to fabricate a kind of advanced select control with the existing Webix controls, sometning that could have “sub” entries similar to the context menu? I would like to essentially group options in a select type control.
Thanks for any insight or pointers
-SrvrSide

Yep, you can use any webix widget inside of the suggestions box
So it can be tree or grouplist for example

https://snippet.webix.com/4816jggz

If this is not enough, it possible to create your own mix of widgets and place them inside of combo/richselect popup