You can change the order of tasks in My Tasks and in Available Tasks lists.
There are there options available:
Tasks can be grouped by process
Tasks can be grouped by due date
Tasks can be shown without grouping, ordered by a due date.
You can use the dropdown button in the top right corner of task list.
Click and choose the option you would like to set:
Tasks list with "no grouping" filter will look like the following (task with the closest due date will be placed first):
2. Tasks list grouped by process will look like the following (processes are organized in alphabetical order):
3. Tasks list grouped by due date will look like the following (tasks are shown in groups: tomorrow, this week, this month and later):
