Hey @yogaservicecouncil,
Thanks for reaching out!
The licenses are not required for any functionality of the plugin whatsoever.
So in other words, if you have the software installed on your test site and do not enter your license key there, it will work fine and behave exactly the same as if the license key was entered.
The license keys only sign up a domain name for support and for auto-update notices.
Does this help at all? The central point is that licenses are not required for functionality at all, and so simply getting the latest version of the software from http://theeventscalendar.com/my-account/downloads and testing it on the development site will be an accurate simulacrum of how it’d behave on the Live site.
Cheers!
George