Adding sub-tasks to a task seems to be no problem, perhaps because they are already indented.
Indenting these sub-tasks removes all the start and finish dates for the rest of the sheet. Is there a way to avoid this and preserve the Start and f=Finish dates, thereby saving the Gantt chart?
One way is to copy and past the dates into another document, indent the tasks needed, and paste them back in, but that seems like a less-than optimal choice.
Thank you for your help.