A. Go to Settings > Properties.
B. Click and expand the property you need to connect with another Stripe account. In "Payment Gateway Settings", tick on "Custom Settings" and click on "Yes, Custom Settings!".
C. Click on "Add Payment Gateway" and click "Stripe Connect" then "Save".
Note: Please make sure you are currently logged in to the Stripe account you want to connect with the property. The rest of your properties will use the Master Stripe account which you set up when completing Account setup.