For a description of all commands and buttons you can use, please see rrControl help.
You can change a few settings via the job page of rrWebsite.
You can change almost all settings via the settings page of rrControl.
If you select multiple jobs, then rrControl shows differences between the jobs is pink.
You can change a few settings of a job (like enable postscript) and the other settings are not changed (like sequence start/end).