The clutch cover is the circular one not the whole RH side cover. Here is a picture of a blingy after market billet job which highlights it nicely
Drop the brake leaver out the way, 6 bolts and pop the cover off. It uses an o-ring seal so no paper gasket to replace. Stood upright the bike will spew oil over the floor with this cover off (don't ask how I konw this
).
No coolant drain is required, this cover just exposes the clutch for servicing the clutch pack, pressure plate and springs. 15 minute job
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There is also the a drain screw in the cover highlighted in the above, and the non return valve bolt next to it, I am not sure if these will get oil out of the sump though. But worth a try before your remove the cover.
When you refill there is a bleed screw in the cylinder near the timing chain tensioner to bleed air our and ensure oils getting up to the cams. they run in the aluminium head so if they run dry and score up the journals it will cost you a new head. As you going for broke on getting all the oil out I would advise you ensure you bleed this line on first start up.