There are several ways to delete contact records in Crelate.
First, to delete an individual contact in Crelate, you'll want to navigate to that contact's profile. Selecting the 'this contact' drop down, will then display the option to 'delete.' As a reminder, THIS ACTION IS FINAL. You cannot undo or recover a deleted record.
To delete contacts in bulk, you may do that from your 'contacts' view. You'll first want to select the contacts you wish to delete. From there, select the 'select contacts' drop down above.