title: How to enable canAddAttachments capability for Google Calendar Workplace Add On
body: <p>I’m creating an add on that adds attachments to an event (think one click button to generate meeting notes and then add that newly created doc to the event as an attachment).</p>
  <p>I’m using the example shown here <a href="https://developers.google.com/apps-script/add-ons/calendar/calendar-actions#add_attachments_with_a_callback_function" rel="nofollow noreferrer">Add attachments with a callback function</a>.</p>
  <p>I have the OAUTH scopes setup correctly (fixed an error that complained about that), but adding an attachment fails with this message:</p>
  <blockquote>
  <p>An add-on cannot add attachments when canAddAttachments capability is false.</p>
  </blockquote>
  <p>I’m not sure how to set this capability. This is on a standard Gmail account calendar, not a workspace account.</p>
  <p>Thanks</p>