@user2I2HLsEFlQ I think you want to
- Open Settings
- Click on Accounts and backup
- Click on Manage accounts
Scroll to the bottom and you will see "Add account"
To delete an account from showing in Contacts, click on the account name, click on Sync account, turn off "Contacts".
To delete an account entirely, click on the account name and you will find a "Remove account" button.