The best you can do is \\FreeNAS\Media, \\FreeNAS\TopSecretPlansForWorldDomination, \\FreeNAS\ExtremelyBoringNameThatDefinitelyIsNotHidingAnythingWhyWouldAFilenameLieToYou, etc.
Each of those would be a share, that means you make a "Media" share, a "TopSecretPlansForWorldDomination" share, a "ExtremelyBoringNameThatDefinitelyIsNotHidingAnythingWhyWouldAFilenameLieToYou" share, etc.
You probably want them all to be different datasets, because they'd presumably have different snapshot tasks and similar properties.