How do I make corrections to a processed or new payroll check using Enter Checks?

Since the check has been processed and not printed/accrued/posted you can go back into Enter Checks to make any corrections needed.

Go to Tasks , Enter Checks.
Select your Time View
Note: Period begin date is optional.
Enter in the Employee ID and Period End Date and Check Seq to the check that needs to be adjusted. Press tab or enter to open the check.
Correct any Time, Deductions, Fringes or Taxes as needed
Press Process
Review check information in Chk Info
Then click Accept Check.