I need to create a multicombo with optgroups. How can I do?
These 2 snippets were very useful:
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?