Garmin lake level offset

Well, i decided to change to Garmin for my navigation at the console. I’m seeing a lake level offset ( like lake master ). Is it available on the 93sv with lakevu maps? I’m not finding the setting.
I hope this isn’t a pay for upgrade


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Go to charts and pick your favorite (mine is fishing chart). Click menu, QuickDraw Contours, settings and you should see it there Attachment 486042


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