To create event with multi ticket types, you can use product type is Variable to create each variation for each ticket type, you can follow this guide
(You can also check document of Variable Product here)
1. Go to edit event > Scroll to Product data section > Choose “Variable product”
2. Select “Attributes” setting tab > Custom product attribute > Add
3. Enter name of ticket, example: Choose your seat > Set values separated by a vertical pipe, | (e.g., Vip| Normal | Free). > Enable the Used for variations checkbox > Select Save attributes
4. Select “Variations” > Select Create variations from all attributes from the dropdown menu > select Go
5. Select each variation to set price and stock
