How do I install a .pfx/PKCS#12 file on a Mac?

An installation of .pfx files for Mac works as follows:

1. Using the Spotlight search, open the „Keychain Access“ application.
2. On the Keychain Access toolbar, click “File” > “Import Items” > Select the .pfx file (for example, SSLCertificate.p12).
3. Enter your password > Click “Ok”.
4. The installation is complete.