Go to your hub and paste the app into the app code and hit save. then go to apps, user apps then add package manager.
https://raw.githubusercontent.com/dcmeglio/hubitat-packagemanager/master/apps/Package_Manager.groovy
Go to your hub and paste the app into the app code and hit save. then go to apps, user apps then add package manager.
https://raw.githubusercontent.com/dcmeglio/hubitat-packagemanager/master/apps/Package_Manager.groovy