WP Travel Pro plugin provides the feature of adding new tab so that you can add any information or detail about trip under the newly added tab. You can add any number of tabs as per your requirement using global tabs setting or individual trip tabs setting.
You can add new tab using global tab setting by going to Admin Panel > WP Travel > Settings > Tabs
Also, if you want to add new tab only for certain trips, you can add tab for the trip by going to Admin Panel > Trips > Individual Trip(edited) > Tabs
For detail assistance regarding custom tabs, please refer our official documentation.
If you have any confusion then please post them in our official support forum.