Brian,
We definitely have some pending items coming down the wishlist for improving the capabilities of the Watering and Runtime Schedules. I am going to take note of your example as we start building these capabilities.
For now, what you can do is send your schedule over to a spreadsheet, where you are free to customize to your liking. The link below will give you a sample of this process.
Importing Excel Spreadsheets Into CAD
Power Tip: Creating An Excel Macro