To share your google sheet, you need to have at leas one team member in your team.
Note: here you share ability to save data to your google sheet with Seller Assistant App extension. Your team member will not have access to goole sheet.
Sharing Connected Google Sheet
Go to Google Sheets https://app.sellerassistant.app/settings/google-sheets
Click on thee dots next to the sheet you going to share.
Click on Permissions menu item
Check users you want to give ability to save data to your Google Sheet.