Expert Outlook Addin and Vb6 programmer

I have an Outlook Plugin (DLL) that was written many years ago in VB6 and worked fine with Outlook 2003  x86

I now want this to work with Outlook 2016 onwards.

I have made some progress on this however I am not totally familiar with things like
Implements XLIRibbonExtensibility.IRibbonExtensibility

Currently the code uses CommandBars which needs to altered to Ribbon methods.

It is a x86 DLL but it is loading and seems to be working Ok apart from the Ribbon bar which I think is just a matter of someone who understand the difference between the old CommandBar versus the RibbonControl

a)
Fix the missing Tabs and Buttons on both the Main ribbon and also on the Compose ribbon
b)
Make sure the buttons operate correctly like a toggle On/Off - and returns the condition back to the main VB6 code.
c)
Make sure it loads for both x64 and x86 in Outlook 2013 and 2016

thanks