QuickStart events are stored on the phone and so can't be shared. Although you can export the files and then create a CheckSites event.
To create a Checksites event you upload your files to the server using the interface at
https://p.fne.com.au. You are given a 6-digit code for this event.
Any number of users can download this CheckSites event onto their phone, if you share the 6-digit code with them.
Checksites events are meant for testing and evaluation, and not for competition. Results are generally not uploaded to the server, and if they are manually uploaded, tracks are not displayed.
In a Checksites event all the settings remain open to change (for testing) and so different users of the event can have different "rules" applying. For example, one user could have their location being continuously displayed and have a punching tolerance of 50m, whereas someone else could have the default settings.
For a summary of the event types see:
http://maprunners.weebly.com/maprunf---event-options.html