If I have flexible publish set up to call a downstream job with a manual trigger (in my case only if the build is successful) it just calls the job automatically, no "play" button.

If I do it without flexible publish, it will show the "play" triangle on the job and wait for me to trigger it.

Also: Is it possible have that play button take you to a screen where you can change parameters? I have a boolean defined and I want the user to be able to set that to true or false before running the job.