USx2020 Bouncing Problem MacOSX

[Sonay Akcen]

Hi,

I bought usx2020 and using with logic prox, but having problem with bouncing..

Usually with my previous audio interfaces (RME- Presonus etc..) I choose a returning input, such as 15-16 with presonus and it would allow me to record in the full song, and then I start mastering on stereo 1-2

But I couldnt find any returning option on us2020 settings panel.. only solution I came by is to connect coax out with, coax in (i dont know if its gonna work) manually.

Can someone help me figure out a solution please

MacMini Late 2012 USB3
Mojave
LogicProX