What do you want to find out?
To modify a previously added Filling station simply double-click the row you want to modify or right-click and select Modify.
Or select it by ticking the box before the name and select Modify from the menu at the top.
In the case of Filling stations, you are only able to change the name. The purpose of the trip cannot be changed if the category Refueling / charging by default. If you wish to change the address, delete the current Filling station and add it again with the updated address.
You can change it into a Client/Location or a Headquarters/Branch you wish to.
After making the desired changes, click the Modify button!
(By clicking on the Modify and new button, you can add a new Filling station while saving your changes.)