Self Hosted - cannot add Commons

[vijeshn]

Hi there,

I have self-hosted canvas on AWS. And there have been multiple issues.

1. How do I install Commons? I have looked at the guides and there is a mention of going into Settings->Apps and there will be an Add App button. But I just simply cannot find it on the page. I have attached the screenshot.

2. How do I modify the emails that are sent out? 

Thanks in advance.