Not sure I follow the question but if you want a selection of processes displayed when you start PI then create a set of icons of those processes, choose them and save a selection. That in turn can be saved and called to list on startup. I have this "menu" save and run at PI's startup by editing the startup script. From the end of the startup script:
#endif // !__NO_PJSR_VARIABLES
.open "C:/PI_FavsFolder/all.xpsm"
// ----------------------------------------------------------------------------
// /PixInsight/etc/startup/startup.scp
// Released 2018 OCT 14
C:/PI FavsFolder is where I store the menu and this one is saved as all