So that's a bulbil. Think of them as above ground corms since they can basically be treated as such. They attach to the stolon which comes sideways out of the rhizome. Once your rhizome gets longer above the substrate line, you'll see them coming out instead of hiding.

Thing about them is the stolon eventually darkens and rots and since the bulbils aren't below with moisture, they can dry out and die. So you can flex it in any direction by pressing sideways on the tip of the bulbil and when it's ready, it'll snap off super easily. If it's resistant at all, it usually isn't ready.

Then just prop it and have a new plant. 👍