WP Metrics Master has a deep integration with Vital Stats to enable logged in Wordpress Members who are updating their data to log into Vital Stats to see their reports with a SSO feature.
You will need to set the VitalStats Email field in the Wordpress User profile of the member for this icon to show up on the Widget view.
This can be done manually for each user or alternatively you can use a webhook to update this if you wish to automate this process.
Data: email=[WP Email]&vitalstats_email=[VitalStats Email]
Headers: Name=Api-Key Value=[Your Plugin License Key]