To distribute a LifePak, you need to publish it in the LifePak Builder. You do this by clicking the publish button listed next to the LifePak in the LifePak list.
You can then instruct Mobile Users to download the RealLife Exp mobile app. Once they have downloaded the RealLife Exp mobile app, and logged in, they can go to the Download LifePak window to get the LifePak you have created. You can then have Mobile Users search for your LifePak's name. At this point, the download process varies depending upon whether you have made your LifePak Public, Semi-Private or Private. Click here to find out more about each of these.