Openbox - multiple Chrome Browsers on different Desktops

Question

I set up a auto openbox session in mein lightdm configuration and I try to understand how to manage and arrange windows. Now I try to have Browser in Appmode running. In my understandig it is not possible to open multiple tabs in appmode but I need more than one Website in the same time I have decided to have multiple Browsers in different Desktops.

I used obxprop to determine the OB_NAME of the different chrome windows but I recognized that all of them have the same name. Is there a way to distinguish between them so that I can have one Browser running on every desktop?

I know kiosk mode allows multiple tabs but I also need a florence keyboard on top of all and as far as I know this is not possible if there are windows in full screen.

Thanks in advance