Choose now which Memotoo groups of contacts you want to sync with your Gmail accounts:
Follow this link to configure synchronization Gmail:
https://www.memotoo.com/bg/how-to-sync-gmail-contacts.php
If you want to know how to sync multiple Gmail accounts with one Memotoo address book, see this wiki: http://wiki.memotoo.com/wiki/Sync_mutiple_Gmail_accounts_with_one_Address_Book