There are two ways to create an event with different ticket types, each ticket types with it's own price
1. Use Custom Fee Fields
The idea is you can create custom fee fields to allow users to choose these ticket options and charge them different fee base on their selection. See https://eventbookingdoc.joomservices.com/basic-setup/custom-fields/custom-fee-fields#radio-list-single-dropdown-custom-field-type for detailed documentation
2. Use Ticket Types Plugin
If you want more advanced options: Each ticket types with it own price, capacity...., you can use ticket types plugin. See https://eventbookingdoc.joomservices.com/plugins/ticket-types for detailed documentation.