Premium Tournaments sign up need to include variable product type

So my company host many live events. We’ve installed and using premium tournaments, when a user signs up to our event they need to be able to choose a time session for the tournament.

Is there a way to include or join together product types “Variable product” with the “Pay To
Join” product type? I need my users to be able to select a time session when they sign up to our tournaments but I don’t know how or if this is possible to do?

Screenshot showing what i want: https://snipboard.io/cwbXMf.jpg

Thanks