Hey Alisa,
To be able to charge money for tickets, you will need to install WooCommerce on your site alongside the ticketing plugins.
I would recommend following each step of the New User Primer here — it covers the full scope of things to get setup with both RSVP and Paid tickets → https://theeventscalendar.com/knowledgebase/new-user-primer-event-tickets/
↑ Please check that out and follow each step. It links to other Knowledgebase articles that should be helpful for you here, including this one:
• http://theeventscalendar.com/knowledgebase/tickets-making-a-ticket/
Definitely check out those resources. If you have any questions, come back to our “Event Tickets Plus” forum and open a new thread there with your questions ? https://theeventscalendar.com/support/forums/forum/event-tickets/event-tickets-plus/
Cheers,
George