Add specific dates to job Admission Times

Current Situation

• Job Admission Times can be configured for weekdays and month days

Desired Behavior

• Job Admission Times allow to specify individual dates. This option can be used if no rule for recurring days such as weekdays or month days applies.
• Adding dates for Admission Times includes to specify the date & time and to specify the duration for admission to the job.
  • Dates are specified internally as seconds since Jan 1st 1970 and are calculated for the time zone assigned the workflow.
  • The GUI offers to select dates from a calendar widget.