Issue in the Surface Design module "Surpac 2026 Refresh 1"

I am using Surpac 2026 Refresh 1, and I am facing an issue in the Surface Design module.
 

Currently, the Surface Design side panel is not visible / not appearing in the interface.
I have checked the available menus and toolbars, but the Surface Design panel is still not accessible. Kindly help me with the possible cause and resolution for this issue, such as required settings, workspace configuration, or installation-related steps.

For reference, I followed the workflow shown in the video below, where the Surface Design panel is visible and accessible; however, the same panel is not available in my installation:


https://www.youtube.com/watch?v=yczsXZy2Z-o

@Glenn BARLOW