Thanks for the interest in our plugins.
If you would to have people add events from the front end of your site you will want to purchase Community Events.
Each plugin is separate and none combine features from the other plugins.
Each plugin only requires the free version of the Events Calendar so you do not have to purchase Pro to use Community Events or WooCommerce Tickets.
You can review all our license and installation information here:
https://theeventscalendar.com/knowledgebase-category/purchase-install/
Let me know if you have any follow up questions.
Thanks