From the community section, click "My Communities" in the top nav menu. Next, select the learner you want to view the portfolio entry by clicking the portfolio icon.
Now you can view the portfolio of the learner, add comments, provide formative feedback, and more. Clicking on the lined icon allows you to view achievement standards.The windowpane icon reveals the learner's activities.
If you need help in attaching achievement standards to your learner's task, do check this article out.