One of my tables has automatically been nested in another. Why, and how can I revert this?

Hi,

I've just started using Ninox, and I'm running into quite a few issues...

One of them is as follows: I had two separate tables ("Personnes" and "Films"), but, for some reason, "Film" has been automatically nested in (made child of) "Personnes". I don't understand why that happened, and I don't want it that way. How can I fix this?

Thank you very much.