If it's the whole front passenger seat -
1/Slide seat right back
2/Remove hex head bolt from top front of each seat runner.
3/Disconnect any electrical connectors underneath (heated seat, power,
etc.)
4/Slide seat forward.
5/Remove nut from underneath rear of runner on each side.
Don't lose the big washer!
6/Lift clear and wrestle thorugh door aperture.
(Then what are you going to do with it?)
Dry lube everything before reassembly. Easier next time.