how can I add a second inbox(from shared mailbox) into my favorites of my main mailbox

Hello

I managed to add a shared mailbox to my personal one. But I'd like to have the inbox also showed in my favorite lists otherwise it is hard to see if I have a new email in the shared mailbox (as its hidden and therefore I miss those messages)

See below the screenshot. Also how can I change the sorting of the subfolders of the shared mailbox? (green marked part)

Thanks a lot,