Multiple Active Run/Debug Sessions in NiosII IDE v9.1

Hi there,

My project related to use multiple processors. I downloaded the "tu_niosII_multiprocessor_stratixII_2s60_rohs.zip" example and follow the tutorial to create the one. However, I get stuck at the point I support to setup the NiosII IDE for multiprocessor debug. There is no such thing "Allow multiple active run/debug sessions" or some thing alike in Nios II IDE version 9.1. Any one know how to enable this feature so I can see all three (3) project from difference CPUs on the terminal?