Once you download the file and fill it out with your team's dates, you need to export it as a CSV to upload it. Donut celebrations only accepts CSV file uploads.
Export from Google Sheets
Click the File tab.
Choose Download.
Select the Comma-separated values (CSV) option.
Export from Microsoft Excel
Click File > Save As
2. Find the place where you ant to save your work
3. Click the arrow in the Save as type box and pick the CSV file format.
4. Save the file.