Covve is designed to automatically synchronize with all available contact groups on your device. So, if you have multiple accounts on your device (e.g. Google Contacts, iCloud, Exchange etc.), then contacts from all accounts will sync with Covve.
Note that you will be able to see contacts from all accounts in Covve, but Covve will not merge or combine these different contacts accounts.
Adding contacts or scanning cards in Covve and want to add them in a specific contacts account?