There are 3 different file extensions you may find on MyMetSupport under the Procedure Download page, ZIP, MCZ and on rare occasion, PKM. These all have a different installation process.
To install a package with the "ZIP" file extension follow this link:
To install a package with the "MCZ" file extension follow this link:
To install from a PKM file please see the attached document:
So now you can handle a ZIP, PKM or MCZ procedure file with ease.