To integrate multiple Zoho CRM accounts:
From the Navigation toolbar, select Subscribers and select All Subscribers.
Click Sync tab and click on New CRM Account.
Specify the following:
a) Email Address: Enter your Zoho CRM account’s email address.
b) ZSC Key: Enter the Zoho Service Communication (ZSC) key generated by your Zoho CRM account.
4. Click Next to proceed.