Prerequisite: Timetracker Mobile for VSTS and TFS must first be paired with/connected to with your Timetracker web account. Please see "Connecting Timetracker Mobile for VSTS and TFS" for more information.
If you have already used the app, you will see a list of your most recently-tracked work items. The most recent will display at the very top and also be highlighted at the bottom.
1. Swipe-left on one of the top items on which you've previously tracked.
The "Start" button displays:
2. Click on "Start".
Tracking begins on the selected item.