The "Grades" page for custom tasks is only populated when a task is closed off. Custom tasks can be closed off by:

  1. Students completing all questions in the task
  2. The task passing the expiry date

So as soon as the task expires it will become visible in the grades page.

For in-progress assignments it is best to see results by clicking on the individual task either from planner

OR from the column header on grades page

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