The Deadline UI in 5.x is full of quirks, not least of which is that the menus don’t scroll. As the submit menu is so long, this leads to a bunch of things being inaccessible. Is there a way to remove unneeded entries from this menu, or are they hard-coded?
You could just remove the directory and files of the ‘known’ application submission scripts which you know you will never, ever need. I suggest you move them to a “backup_you_never_know” directory somewhere for safe keeping. Re-open monitor and they will be gone.
//repo_path/scripts/Submission/