You can connect to Synder as many QuickBooks/Xero companies as you wish. Follow these steps to do so:
1) Go to Add QuickBooks/Xero company menu.
2) Choose the accounting system you would like to connect (QuickBooks Online, Xero or QuickBooks Desktop):
3) After choosing the accounting platform you will be redirected to the Sign in page of your accounting system. Please, enter your credentials and click on the Sign in tab.
4) In the next step click “Connect” button:
Congratulations, you did it!
The next step after connecting your company is connecting your payment system. Follow this link to find a detailed guide how to connect your Stripe/PayPal/Square Payment system to Synder.