You can choose to automatically add a tag in Shopify to any referral/affiliate orders that Social Snowball tracks.
To do this, head to the Programs tab and click on the program(s) whose orders you would like to tag.
From within the Program builder page, head to the advanced program settings card and enable the "Tag referral orders in Shopify" option.
Please note: Depending on when you installed Social Snowball, Shopify may require you to update permissions when enabling this. If so, accept the new permissions and then enable the option again.
Make sure to click publish to save your changes. Moving forward, all referred orders tracked in Social Snowball will be tagged in Shopify with:
Referral - Social Snowball.