In this case, I suggest using the DAILY SCHEDULE version (check this video for more information on what file to download). Then follow these steps, every time you need more space during a day:
- go to the Templates section and copy a Notes page template
- go back to the Daily Schedule page and paste the Notes page after it
- duplicate the recently copied Notes page as needed
Keep in mind that when you purchase a 2020 digital planner you will have access to both DAILY LINED version and DAILY SCHEDULE version. Pick the one you like to start planning.