How to put a currently running process in foreground to background and detach from ownership

1. Ctrl + Z to stop (pause) the program and get back to the shell.
2. bg to run it in background.
3. disown -h [job-spec] where [job-spec] is the job number (like %1 for the first running job; find about your number with the jobs command) so that the job isn't killed when the terminal closes.
example: disown -h %1