Set custom toolbars in Draftsight, classic workspace

Hello everyone,

How to set custom toolbars combination in Draftsight, classic workspace? 
I've tried to set some extra toolbars in Draftsight (see video below), classic mode, but I've faced with several issues:
1, The modification is not saved in the customization interface window, and it does not have the result that I expect (missing toolbars).
2, Each time when I restart the application the toolbars - that are set previously - are missing.

Any idea how to set toolbars to classic style?

Thank you in advance,
Romeo