A personal to-do allows you to create to-do's private from any of your team members. They appear on your My Focus page, and are excluded from any team lists - meaning it will not show up on the to-do's page in the left navigation.
Completing and Archiving
Personal to-do's are completed the same way as a normal to-do, by using the check mark to signify done. Right click on the item in order to archive it, and a way to bulk archive AND view that archive will be developed in the near future.