Go to Dashboard and select the desired event.
Go to Sales configuration.
Select the desired shop and click the black Edit button.
Under Shop layout, select Pages.
Click Save changes.
In the shop, click the pink Add category button at the bottom right of the products.
Give the category a title and select the desired layout. Then click Create category.
Click Add products to sale and select the category to which they should be added. Or, if you already added products to your shop, move them to the correct category.
Repeat steps 6 to 8 to add multiple pages with tickets and other products.