You may want to check chapter 5 of Oracle Community Forum Guide - Part 3/3
However, The Dashboard for Followed items and the Communications channel for Tracked items does not allow you to sort the content by open or answered discussions.
To show open or answered discussion you can do the following:
1. Open the forum space you are interested in.
2. Click the Content tab
3. Click on Discussions
4. From the pull-down menu, select All Discussion, Answered Discussion or Open Discussions.