Working logic of PINCE

It's the same with gdb's all-stop mode. Only different thing is background execution, it's enabled by default so you can run commands without stopping the inferior

Press F1 to pause, F2 to break and F3 to continue the process (You can configure these hotkeys in settings). Once the process have been stopped, the title that shows process name and PID will turn red and there'll be a text next to it as "[stopped]"

Btw, there's almost no difference between pausing and breaking the process, the only difference is PINCE doesn't update Memory Viewer screen when you pause. Pausing instead of breaking is really useful when you are doing something other than debugging because you won't be losing your old debug info(view of Memory Viewer screen). Seeing the disassemble screen reset itself whenever you stop the process is pretty annoying(especially if you forgot to bookmark the address you are working on)