Export
Spreadsheet
One row per place, with its day, booth number, hours and position. Edit it in Excel or Google Sheets, then bring it back with Import.
Map file
Paste this over data/event.js to make your changes permanent for everyone who opens the map.
Import places
Use a spreadsheet with a header row: Day, Booth #, Name, Category, Tagline, Hours, Details. Export gives you every column. A row with no location takes the spot of the booth with the same number. Write several days as “Thursday, Friday”, or leave Day blank for every day.