Any assignment in Canvas can be made so that the uploaded document is scanned for plagiarism. I would encourage you to create the assignment and attach whatever rubrics you want to use in Canvas for SpeedGrader in Canvas before you turn the assignment into one that will be scanned by TII.
TII works to translate to and from Spanish and French too. So sorry Latin!
Finally, the advantage of using TII this way is that you do not need to maintain a separate TII account and you never need to ask students to join a TII class, it all just happens within Canvas by passing along their credentials and displaying the results within the assignment.
Here are some nice videos that will walk you through the steps:
Here is the definitive and up to date TII guide for the Canvas integration: