When an item is shared with you, you can add comments/assessments if the person sharing the item has enabled the appropriate permissions (Add/See Assessments). In addition, adding assessments requires that the shared item has a rubric linked.
Adding comments or assessments to a presentation works slightly differently. This is described comments of this page.
Adding comments

- Click the My Items tab.
- Click on the arrow next to the item you want to comment on.
- Click View, the following screen will open:

- Click Add Comment to leave a comment on the item.
Adding assessments
You can only add an assessment when the student has linked a rubric to the item and has given the appropriate permissions when sharing.

- Click the My Items tab.
- Click on the arrow next to the item to be assessed.
- Click View, the following screen will be opened:

- Click Add Assessment, if the button is available
Presentation

- Click the My Items tab.
- Click on the arrow next to the item.
- Click View. This opens a screen displaying the presentation as seen below:
- Click Review Presentation.
- You can also add comments to individual items by clicking Add Comment. This is only possible if the student has enabled this option..

A screen now opens where you can leave comments and assessments.