Hello everyone,
I'm wondering how is the "Parent Control" set up, for example this is the New Form and it has a dropdown dd_Team_1:

which is somehow dependent upon dd_Department_N, which is another card in the same Form, but it does not have any relation with it?? I don't understand how does Power Apps define the Parent controls and how much can I manipulate with them? what do I achieve by changing? Right now they are completely isolated one from another, yet they still have a parent-child relation?

If anybody understands this theory, please help me out with some references to reading material or sth 😄 I appreciate any help!