Hey there, that’s a great question!
Community Events and Events Calendar PRO are both separate plugins with their own set of features that enhance our base plugin, The Events Calendar.
Community Events adds a submission form so that you can accept events from site visitors without them needing to access the WordPress admin. It sounds like this is the one you are looking for.
Events Calendar PRO adds a host of premium features, like recurring events, custom event fields, additional calendar views and widgets.
Does this help answer your question? Please let me know. 🙂
Cheers!
Geoff