Yes, it is possible to add Multiple categories in a single pricing for a trip using the WP Travel Pro plugin.
WP Travel Pro plugin comes with multiple pricing options from which you can add different prices for different categories.
To use this feature first you have to enable utilities modules by going through Admin Panel > WP Travel > Settings > Modules Settings > Pro Modules and enable the Utilities as shown in the screenshot below:
Then, To set different prices for different categories like a child, adult, infant, etc., you have to click add new button in the backend section.
You can add a pricing category by going to Admin Panel > Trips > Pricing Category
For more details, please watch given below YouTube video
Further, if you have any queries, please submit them to our Contact page.