[jitsi-dev] Providing default provisioning url?

How can I have a default provisioning url set up when a new user installs

I.e, rather than the user having to manually enter the provisioning url,
I'd like to have the provisioning url automatically set up for them when
they install the application. (I'll be building a custom installer for this)

Previously someone mentioned that this could be setup in a .properties
file, but I can't remember which one. Can anyone remind me?