Hi Team,

I am facing issue to extend existing Customtab in outlook with Office Add-ins (not with VSTO, its with manifest.xml)

Steps:
I have created a customtab called "My Add-Ins" in outlook, this was created with first add-in called "A" and its working fine.

Now I have another outlook add-in called "B", I wants to add "B" add-in to exist/already created customtab "My Add-ins".
How can I do that? Do I needs to use Office Tab or Custom Tab in manifest.xml ?

Can you please help me here, thanks in advance 👍