Different Screen Orientation for Seperate Levels.

Hi there, I am fairly new to Unreal 4 and C++ (Previously a Unity user)

I would like to ask if anyone could help me understand how to change different screen orientation on runtime during different Levels?
Say Level 1 is Portrait
But Level 2 is Landscape

I am learning to write my on blueprint function for that purpose but I have no idea where to begin.

Could anyone lead me to the right path? There seems to be very little information regarding this aspect.