First you need to set up the Canvas non-LTI integration.
After having done that, go to the admin panel, choose the account for your institution, go to Settings then to the Apps-tab. Click the the "+ App"-button and then in the Configuration Type-dropdown choose By URL.
The Consumer key and Shared secret should be given to you by Peergrade.
The Config URL should be in
https:// is important – the LTI integration will not work if you type
Now your teachers can use the our Canvas LTI integration guide to use Peergrade from within Canvas.