There are two ways to link a notecard to source:
1. On the Sources screen
To the right of the source, in the Notecards column, click New to create a notecard, and the new notecard is automatically linked to the source that you are working with.
2. On the Notecards screen
If you are on the Notecards screen, create a new notecard and select a source from the Source dropdown list.
To change the source in your notecard
If you are editing an existing notecard (from either the Sources or Notecards screens), you can change the source information by selecting a new source from the Source dropdown list. See above image.
To link multiple notecards to a source
To link multiple notecards all at once to a source, first go to the Notecard Tabletop view and select any number of notecards. They will display with an orange selection rectangle. Click Link to source.
Select the source from the dropdown list and click Submit to save the change.