How to disable calendar sync

I have 2 email accounts. I need a calendar only from the first account. How to disable a calendar sync on the second? 
Thank you!

Hello Dmitry, to disable any of the available account services navigate to Tools > Accounts > Your account, and select the service above in the available tabs, for most accounts you should have an IMAP and SMTP tabs available as your email services and Calendar/Contacts tabs for your Calendars and Contacts services.

However note it depends on the account type, some accounts use a single protocol to synchronise all your items with the server and thus it is not possible to disable single service sync.