There are not separate spell fields, you'd just need to indicate in the notes which is Psionics and which magic; however, there is a separate set of fields for ISP. If you haven't found that yet, click on the black gear icon (to the left of the Wild Card/Mook slider) => Additional Setting Fields => checkbox or Inner Strength Points. That same section has other options you may need/want for Rifts, too, like: Burn, Internal Repair System Charges, etc.