When the order joins feature is enabled on your account, orders will be joined and fulfilled as one shipment when they have the same Cart Order ID and/or customer e-mail address and postal code.
To enable or disable this feature, log in to GFS and click Settings from the main toolbar on the left-hand side of your screen. Then choose Company from the innermost toolbar. Click the three vertical dots to the right of your company name. Select Edit from the drop-down menu. Click Next until you reach step 3. In the Joins Enabled Field, click the upside-down triangle and select the appropriate option from the drop-down menu. Click Save to finalize your changes.