You will need to remove the sump cover to access the sump plug
Undo the Torx retaining fixings
Carefully remove undertray
Don't forget to have a suitably sized receiving tray in place
With an oil catchment tray in position, use an 8mm Allen key 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
Replace the sump plug and washer. Do not over tighten. Replace the sump cover