Hello,
I need to create a multicombo with optgroups. How can I do?
These 2 snippets were very useful:
https://forum.webix.com/discussion/4898/how-to-use-optgroup-in-rich-select
https://forum.webix.com/discussion/7537/how-to-disable-special-values-in-options-of-combo-richselect
I managed to put optgroups in multiselect, richselect, and combo. I could not make it in multicombo.
Alternative question: Instead of a suggest body, how to add an options treesuggest in a multicombo as it is possible in multiselect, richselect, and combo?