How Zoho CRM will consume Business Messaging Credit (Whatsapp) ?

How Zoho CRM will consume Business Messaging Credit (Whatsapp) ?

let say I have 10 credits in Business Messaging like this



I need to know credit consumption from Zoho CRM. How many conversation that I can make using that 10 credits? 

I really need to know so I can predict if my credit is sufficient or not. I have tried to send email to support@zohocrm.com
but I just get the link which I can't find the answer in it In here