Log into OnTrack, select the Event you're working on, and then click the Tasks Module.
Click the plus sign at the bottom to open the 'Create New Task' window
Click on the 'List' dropdown, then click 'Create New List' at the bottom of the popup. After naming the new list, click 'Create List'.
Tip!
If you only need to create a new Task List, you can exit this process, and the new Task list will be available in other areas within Tasks.