Hi

If I add multiple sip accounts is there a way to make them all active at the same time? So that all added accounts can accept incoming calls? 

I added two accounts - and they were not available for incoming calls. so that is why I am asking
is there anything specific in the settings that I should set up?

Yes, the displayed text is misleading. All account should be registered and you should be able to accept calls from all of them.

If doesn’t work for you, please upload a detailed log and notify us by email when you are done, mentioning the server address or your username so we can find your log.