Project Workspace Gantt - Display Non-Working Days Based on Project Schedule

[Ryo14]

Hi,

We are using ServiceNow SPM Project Workspace Gantt and would like to understand the available options for displaying non-working days.

We have configured a Schedule on the Project record (Business Calendar / Working Schedule), and the schedule appears to be used for task date calculations and scheduling logic. However, we have not found a way to visually display the non-working days from that schedule in the Gantt chart.

Specifically, we would like to know:

1. Is it possible in Project Workspace Gantt to display non-working days defined in the project's Schedule?
   • Weekends
   • Public holidays
   • Company holidays (e.g., summer shutdown, year-end holidays)
   • Other non-working periods defined in the schedule
2. If this is supported, is there a standard configuration, plugin, or Workspace setting that enables it?
3. If this is not supported out of the box, what approaches are commonly used as alternatives?

For example:

• Customizing the Workspace or Gantt component
• UI Builder extensions
• Highlighting non-working periods with custom styling
• Creating holiday/milestone records or tasks for visualization
• Leveraging Resource Schedules or other calendar-related functionality
• Any other upgrade-friendly solution

Our goal is to make non-working periods visually identifiable in the Project Workspace Gantt while minimizing upgrade impact.

Any recommendations, best practices, or implementation examples would be greatly appreciated.

Thank you.