How do I program the ISP P25 system into the PSR500?

[stlouisx50]

How do I program the ISP P25 system into the PSR500?

Do I program them in as a conventional?
or
Do I program them in as a trunked system?
or
Do I program them in as a trunked system and set it to roam for multiple sites?

 

[RoninJoliet]

Press "PGM", "NEW", choose P25 AUTO, put in the freqys for the CC's, program in "Wildcard" and all the talkgrps will start popping up ....I have programmed only the towers near my location seperatly in different SLists....