This article? https://proconnect.intuit.com/community/multi-state-taxes/help/input-multi-state-amounts-in-proconne...

Most entries are more like what is shown in it for wages. Only a few use the solution I gave here - Schedules C, E and F are the only ones I can think of right now. They can be done in a much more tedious manner by allocating each entry line of the form, but the percent gets the job done quicker.