To delete nonstandard semi-monthly and monthly pay and work periods Access Nonstandard Pay and Work Period Entry (PR21.4). Identify the plan and period type. Use the following guidelines to enter field values: Pay Plan Type the name of a nonstandard semi-monthly or monthly pay plan. Effective Date Type the effective date of the pay plan. Period Type Select 1 - Pay Periods or 2 - Work Periods. Click Inquire. Identify the earliest period that you want to delete, and enter function code X on that line. Select the Delete Forward form action. The system deletes the selected period and any subsequent existing periods of its type (pay or work) for that pay plan.