How 2 users remote desktop to same PC but different user account?

Hi

I know that remote desktop only allow one session at a time, but I heard someone told me that we can remote desktop to one computer at a same time, but different account. For example:

PC1 => PC3 User1

PC2 => PC3 User2

I tried before, but Windows not allow me to do so, it will disconnect PC1 connection same as we connect to same user account.

Thank you.