Completing the Course Home summary

Does anyone know how to complete the “Course Home” summary (see screenshot)? This appears after the course has been started and before the first item in the course outline has begun. In our case, the first item in the outline is a webform. I have been unable to find where this can be edited.
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Hi Jamie!
This is found under “Course Instructions” in your course shell. This is the space to add instructions for your learner to navigate through the course. If the block for “course instructions” is empty, you’ll get the “No Summary Available” message.
Hope this helps!
Valerie