Hi jrucker,
The most cost-effective way to do that would be to upgrade both of your current Personal level licenses to Business level. That would allow you to use the licenses on up to 3 sites total. When you upgrade from Personal to Business level, you get an automatic $50 off since you already paid for the Personal license. So upgrading both of your licenses would be $50 for a total of $100. Normally two Business level licenses would be $200, so you’re getting 50% off 🙂 Does that answer your question?
Best,
Leah