I have a web app developed in Google environment (HTML, JS, Google script, CSS). Basically, this page is used to fill in the documents' templates and sends the created file to user's email.
I would like to add "Favourite settings" menu for users in case to reduce time for filling in the template with the same characteristics. The main problem is there can be a lot of custom comments, which should be included into generated document body. So, I guess the optimal solution would be to save already filled HTML page, give it a name and load it. (Created diagrams for better understanding)
Could you, please, advice me, if there are other possible ways to do it? And how to do it?