You will need to remove the sump cover
Undo the sump cover fixings
Carefully remove undertray - It is quite heavy
Do not forget to have a suitably sized receiving tray in place
With an oil catchment tray in position, use an 8mm Allen key to carefully remove the sump plug. Fully drain the oil.
When the sump has emptied, wipe clean the sump plug area with a paper towel