If you are uploading a Sibelius file
If you are uploading a Sibelius file, Score Exchange will automatically create the parts from the Dynamic Parts that you have configured in your score. If you are using an older version of Sibelius that does not have the Dynamic Parts or you haven’t configured any Dynamic Parts, then Score Exchange will automatically extract all the parts for you.
After Score Exchange has automatically created parts for you, you can manually upload additional parts or edit the automatically created parts.
If you are uploading a PDF file
When you upload a PDF file Score Exchange can not automatically create instrumental parts, so you will need to upload these manually. You can upload the instrumental parts for your score after the full score, by clicking the relevant ‘edit’ button on the My Scores page then using the ‘Instruments’ option.