Answer
Add an invitation by clicking 'Update' on your Supply Chain Mapper, download the previous template you uploaded and add a new line to the file for each new invitation to be added to your Supply Chain Mapper, upload this updated CSV file in your Supply Chain Mapper, and click 'Invite'.
Background
Updating the CSV file is how you edit and manage the invitations to your suppliers within your Supply Chain Mapper. It is important to always communicate with each point of contact in your supplier's organisation before entering their email in your Supply Chain Mapper to ensure they are aware of the request. Do not change the product part name/scope of any components that your suppliers have already completed, as this will un-link them from your Supply Chain Mapper.