If you need to add a new task, but find that it needs to be in the middle of the workflow, then this article is for you.
Firstly, find your Project and go to the Project details page.
Then, select Add/Edit Tasks.
To add a new task in between other tasks, all you need to do is hover over the place where you'd like to add your new task.
In the Add/Edit Tasks editor, there will be a + button that appears.
Simply click on that to add a new task.
You can also do this within the Project details page!