Good afternoon Erik and welcome to the Events Calendar forum!
Thank you for your interest in our products.
We’ll be glad to answer your questions.
If we purchase the plug-in and implement on the development subdomain, will we have to purchase a new license to move it to the final host domain?
No, you will not need to purchase a new license.
You can simply move the license over to the final host domain.
Here are a couple of articles on this subject:
- https://theeventscalendar.com/knowledgebase/using-one-license-live-dev-sites/
- https://theeventscalendar.com/knowledgebase/moving-your-license-keys/
How is this handled by the plug-in to confirm our license for the client throughout the process?
In an nutshell, the license is only required to activate the ability to update the plugin straight from wp-admin. In other words, not having a license key entered will not prevent the plugin from working properly.
Let me know if that helps.
Have a great day!
Geoff B.