You can access Calendar sub-module by clicking the LHS link Master Data > Calendar. Upon clicking this link, the Calendar page is displayed as depicted in the following figure:
The Calendar page displays existing company details such as Calendar ID, Fiscal Year, Fiscal Start Date, Current Period, and Frequency. You can also click the 
button to select additional details to be displayed. These include Calendar Desc, Calendar Type, and Modified On.
This page also provides you options to search for existing calendar records, create new calendar records, edit existing calendar data, copy existing calendar data to create new record, and so on.