Is there a way to add multiple files to a "Link to Supplementary Data” section at one time?

Is there a way to add multiple files to a "Link to Supplementary Data” section at one time?

Yes, as soon as your files are located in the same folder:

1. In the "Link to Supplementary Data” section, click on the "Import/Export Files" form tool.
2. Select "Import file(s)..." command. The "Open" dialog will appear.
3. Browse for the follder containing your files.
4. Make a multiple file selection holding "Ctrl" or "Shift" key.
5. Click "Open".