Hello @pnoppers!
Lansweeper is able to scan this attribute and you can use that field to track any information you want to add to it. If you are interested in Lansweeper's behavior, we would recommend testing this by changing the attribute of one of your assets and then re-scanning it.
Also, MMC is a Windows tool so Lansweeper support might not be able to help you set it up. However, you might get a reply from another customer that has worked with MMC before.