The sump plug located on the base of the engine, it is accessed underneath the car
You will need to remove the undertray
Carefully remove the undertray
Don't forget to place a suitably sized receiving tray in place
With a oil catchment tray in position, use a 17mm spanner or socket and carefully remove the sump plug to 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
Replace (new) sump plug and washer. Do not over-tighten. Replace the undertray