Worksheet or audit trail for Form MD 505 additions and subtractions

[Rox]

I need to file a non-resident return for an individual with business income in Maryland. On Form 505 there are lines for additions to income and deductions from income. I am having difficulty following the source of these numbers that populate the form. Clicking on the blue field takes me to an input screen that is blank. The DOR instructions are long and confusing for these two lines. Since the additions that appeared added 35% to their taxable income and pushed it above the Federal AGI, I wanted to investigate further. No way for me to save time without a worksheet or trail. The only worksheets available show singular simple computations.