Starting JExcel:
If you already have JExcel installed on in your serverJira instance, just click on the tab JExcel on the main menu bar and you can start using it.
If JExcel is not installed on your servers yet, you can find some useful information here: Installing and Upgrade
After opening JExcel, you will see a Quick tutorial panel to know how to use it
After checking the dialog, you can create a new workbook.
