Administrator's Guide Setting Up Tax Supplemental Schedules Managing System Settings Managing Periods Creating Periods Creating Periods To create a Period: In your application select Manage, and then System Settings. In System Settings, select Period. Click Actions, and then New. Enter: Start Year Note: The Start Year of one period cannot overlap the End Date of a previous period. Number of Years, the maximum number of years is 20 Period Name, the maximum characters is 80 You can use special characters; example: 02/15/2015. Description, the maximum characters is 1000 Frequency You can specify which frequencies are used in each period by selecting the frequencies from the list of defined frequencies. See Creating Frequencies