In order to edit the command list:
Click on Commands in the Job Properties window
Enter the commands in a list and select OK
Click on the Browse button to insert a command into the command list. Select a full path and filename of the module to execute.The module may be a .COM, .BAT, .EXE for a Windows job, a .COM or .EXE for an OpenVMS job or .ksh, .bsh, .csh or .pl for UNIX. If a partial name is specified, the current drive and current folder are used by default. The format of the command list mimics the batch format of the selected operating system. If the path or filename includes spaces, use double quotes as a module name delimiters. For example: "C:\Program Files\New Jobs\Calendar Create.bat."
Note: You can also Edit the commands of a job in Windows Notepad by selecting Edit > Commands from the job right click menu in the Explorer or Layout View