As a prerequisite, you must use Teacher Tools to enroll your students into your Canvas course(s). Using the rostering tool connects your Infinite Campus rosters to your Canvas course(s).
For information on using Teacher Tools to roster your students, please refer to this post.
Infinite Campus: Identify Grading Categories
Infinite Campus: Set Default Standard/Grading Task
Canvas: Set Assignment Groups to match the Grading Categories in IC
For more details on this, see the guide here.
Please note, if you are an Elementary Teacher, you will only need one Assignment Group in your Canvas courses named “Grades” because you only have one Grading Category in Infinite Campus called “Grades”.
Canvas: Sync your Canvas Assignment Groups and IC Grading Categories
For more details, see the guide here.