1. Open Attachments tab

Click the Attachments tab in the saved event.

screenshot
  1. Open File Explorer

Using your computer’s file explorer, find the file that you want to attach to the event.

screenshot
  1. Drag and Drop File into Attachments

Click and drag the file from the file explorer into the attachment area in the event.

Release the button to drop the file.

screenshot

The file is attached to the event.