You can use password keyring preferences to create or remove keyrings, to set the default keyring for application passwords or to change the unlock password of a keyring. To create a new keyring, follow these steps:
Click Applications › Utilities › Passwords and Keys.
Click File › New › Password Keyring, then click Continue.
Enter a name for the keyring and click Add.
Set and confirm a new Password for the keyring and click Create.
To change the unlock password of an existing keyring, right-click the keyring in the Passwords tab and click Change Password. You need to provide the old password to be able to change it.
To change the default keyring for application passwords, right-click the keyring in the Passwords tab and click Set as Default.