This page is only present if your item is set up to launch a target program that doesn't seem to be running. The page lets you control exactly how the launch is to be carried out.
For most programs, it's just a matter of entering the full path to the program's main executable file.
However, in some cases the "program" in question might run as a service, in which case you might use a "net start XXX" command line. Or maybe you want to run a batch (.bat) file, or a vbs script etc. In these cases, enter your command line and tick the "Use cmd console" box. This will cause the command to execute as though you'd entered it into a command console (aka DOS box for those who remember the bad old days...)
One other option for those running under Windows 2000 or better is to cause the command line to execute as though it was issued from a different account. If you want to use this option, just fill in the account name and if appropriate, the corresponding password. The password should be entered twice for confirmation. Note that very few people will need to use the target account option - if in doubt, just leave those three fields blank and your command will run normally.
After you've entered your command details, hit the Test Now button. If anything goes wrong, PTFB Pro will try to give you an error message that will help you fix your command. Common problems include:
Program Monitor Macros - Overview