For some reason Revit 2018 is one step behind 3ds max as far as using the ART renderers sun positioner - it seems stuck in Mental Raysville. If you want renders to be a bit more controllable then I think 3ds max is advisable.
If you want to work along with this and the other 3 tutorials use this link to download tutorial files: https://drive.google.com/file/d/1hKZ6...
The Other videos in this portion of the tutorials series are:
Revit Basics pt8 - Model In Place - Stair Opening Fascia + 3D Callout
• Revit Basics pt8 - Model In Place - Stair ...
Revit Basics pt9 - Room Tagging, Room Schedule + Colour Scheme
• Revit Basics pt9 - Room Tagging, Room Sche...
Revit Basics pt10 - Interior Rendering Basics
• Revit Basics pt10 - Interior Rendering Basics
Revit Basics pt11 - Revit to 3ds Max - For Interior Day/Night Renders
• Revit Basics pt11 - Revit to 3ds Max - For...