To create 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. Enter start and end dates for each period.