The plan production templates that are located in the Template folder have viewports that are already configured to the appropriate viewport type: plan, profile, or section. These templates are located in \Users\<user name>\AppData\Local\Autodesk\C3D <version>\enu\Template\Plan Production.
If you choose to use templates other than the ones located in the Plan Production folder, an important prerequisite is that you first set the viewport types for plan view, profile view, or section view. While you are using the Create View Frames wizard, or the Create Multiple Views command, if you select a template that does not have appropriately defined viewports, AutoCAD Civil 3D detects this and displays a message indicating that layouts containing the necessary viewports for the sheet type were not found.
Tutorial: Configuring Viewports
For example, you may want to set the default object styles and label styles for all objects, and in particular for the plan production objects that are used for plan/profile sheets (view frame groups, view frames, and match lines).