You can start hosting without paying. The Subscription page says it plainly: You're on the free plan supporting up to 3 players per game. Upgrade for just $4.95/month and host up to 10 players!
#Where you can see your limit
- At the top of every Hub screen, and at the top of the sidebar: a button such as 3 Player Limit. It opens the Subscription page.
- On each event page, the players supported button. See adding capacity to one event.
#What the free plan does and does not limit
The limit is on how many players can be in a game at once. Plans do not hold back features: according to the Hub, every plan gives you full access to all games, trivia sets, the custom builder, social media and lead capture tools, plus unlimited game events. A few things do need a paid plan, such as sending email to your contacts, leaving reviews, and importing shared trivia questions.