When you create a new contact or update that contact's profile in the Interface 365, the new profile or updated profile will sync to Google Contacts immediately. This lets you manage all your contacts in Google Contacts, whether they're initially stored in Interface 365 or Google Apps.
All contacts are listed here. There is a button "+" present at the bottom right, as soon you click on that button a new window will open from where you can create a new contact.
As you click anywhere on the particular contact a window will open that will show you particular contact details. As there are two options present, you can directly "convert particular contact in lead or person".
Moreover, there is an option in the left side below contacts of creating a label as "Create label" and then you can manually move contacts to a particular label you want to move.