How do I vary two inputs together in a scan?
Where to find it: TIME MACHINE → review screen → Parameter SCAN → Save and add a parameter
After entering the first scan parameter, click Save and add a parameter instead of Run scan. On the next screen, select the second entry and field, then enter its Starting value, step and Stop value. Click Run scan to review the combined run table, or Add a parameter to include another input.
The parameters advance together. Suppose the first parameter changes Living expenses from 48000 to 52000 in steps of 2000, and the second changes Travel from 6000 to 8000 in steps of 1000. The three variants are:
Run 1: Living expenses $48,000; Travel $6,000.
Run 2: Living expenses $50,000; Travel $7,000.
Run 3: Living expenses $52,000; Travel $8,000.
MRA also runs the original scenario, giving four TIME MACHINE runs in total. It does not test all nine possible pairings of those two lists.
The scan is limited by the parameter with the fewest values. If Travel stops at 7000 in this example, only the first two variants are tested, followed by the original scenario. Always check the confirmation table to make sure the paired changes represent the comparison you intend.