The following links will take you directly to the installation page in Salesforce:
Important! Make sure to always install “For Admins Only”.
If the install fails because of ‘(Booker25EmailTemplates) To create email template folders, enable Folders and Enhanced Sharing.’, please follow these steps.
For a detailed overview of GoMeddo version changes see GoMeddo version history and if you’re Upgrading from an older version
If you are installing this in a new environment, please make sure to follow the following steps: GoMeddo Clean Install