The sump plug is located on the base of the engine, and it is accessed underneath the car
You will need to remove the undertray
Undo the fixings with a 10mm socket
Carefully remove the undertray
Don't forget to place a suitably sized receiving tray in place
With an oil catchment tray in position, use a 17mm spanner or socket to carefully remove the sump plug and fully drain the oil.
When the sump has emptied, wipe clean the sump plug area with a paper towel and refit the sump plug and washer