GoAffPro provides you with the option to create affiliate connections on signup.
To create affiliate connections on signup, go to the Multi Level tab in the GoAffPro admin panel.
Here, enable the Multi Level Marketing toggle.
Now, click on Change in the Levels and Commissions section.
After this, set the number of levels to one.
Set the commission rate of the level to zero.
Now, click on Save.
Finally, check the "Set downlines as customers of affiliate" option.
After this, connections will get created when an affiliate signs up using another affiliate's referral or signup link.