This is provided in the hope it will be useful, of course. I realize this is far too simplistic for many users of this forum, but will perhaps be of use to those with a level of expertise own, that is to say, closer to zero. I imagine what I've done is already part and parcel of some of the material already available on this site.
My goal was this:
1) Creating an item should start tracking without further ado.
2) Creating a subitem should also start tracking, without stopping the tracking of the parent.
Remaining to do:
1) Lots, including:
2) Make it a little easier to input the end time for a task.
3) Ideally (for me, anyway) creating a new TLI should update the previous TLI and calculate its time.That may be a hard row to hoe and still keep subitem functionality.
4) Should add a Billable yes/No field.