...namely to be able to specify a command-line parameter when starting the prerequisite apps.
Why is this important?
For example, to install the MS SCRIPT5.6 redistributable kit in silent mode, you need to pass these params to the .exe: /q:a /r:n.
In your implementation, there is currently no way of doing that, because as soon as I select a file, the "File Path" field is disabled/greyed out.
Please consider making this change for the next version.
Thanks
J