It’s pretty simple. Stop at Adrian’s Resort or Cyrus Resort further to the west or others, pay their fee and they’ll give you a map showing you the layout of their ice road and where to go. Drive onto the ice at their access areas and follow the roads out to the lake.
The roads are well marked for the most part and the signs will correspond to the maps they give you. You won’t necessarily get a plowed section of the road for yourself, but you’ll get a plowed spot where you park your house if you need it or if the snow isn’t deep, just drive off of their road and park anywhere. You’ll quickly see how it all works once you get on the lake.
It may seem overwhelming of you haven’t done it before but there’s actually nothing to it. the resorts that maintain the roads are all very good.
Drive slow while while on the ice and you’ll be fine.