HI,
Whenever an application requires you to save your password to your Keychain, click "Allow" or "Always Allow". That way you do not have to do this twice for the same application.
The Keychain Access application resides here. (Applications/Utilties).
About Keychain Access
Securely store all your passwords.
With Mac OS X, you can securely store all of your passwords for websites, servers, networks, applications, and more in a keychain. This allows you to use a single login password to unlock your keychain and automatically log in. With the Keychain Access application, you can manage your passwords, view and manage digital certificates, and even securely store notes containing important information.
Carolyn 🙂