How to create an players vehicle in Starfinder?

Hi,

i'm wondering how this works. I see the tab "Vehicles" in the character sheet - i added an vehicle to it, and opened it afterwards. The list is empty, and i can not change its size, origin draft, type or special graft. The Type can be changed by dragging an "item" "vehicle" onto the field, but i have no clue how to add to the remaining fields or change it's speed / full speed. Is there some page or article explaining that? I found the video from Starjammer but they didn't show the vehicles in the character sheet of starfinder ...

It's modular and requires dropping the correct items to the sheet. It functions similar to how PC ships are created with dropping the parts.