Can't put two toastrs at two different positions

[CS730]

I was trying to put two toastrs one on the top right corner and another on the bottom middle, both should need to pop up almost at the same time. But due to asny calling both either appears on the bottom middle or at the top right based on which api call completes first. How to resolve this issue? I want both of the toastrs to appear on their respective positions !!