How to change Game Intensity Settings during runtime in Unity?

Hi Everyone,

We are building Rehab Treatments by VR Games and I would need to make some similar to this ( https://www.youtube.com/watch?v=OvjiJtnlAs8 ) to change the game intensity settings at runtime.

In my case, I would need to do the same but that the therapist can change the intensity exercise to add more objects and fewer objects in the game according to the patient's needs

For that reason, Could anybody advise me on how to build it?

Sorry for my little English and hopefully you can understand me.

Thanks for your time and help

Regards

Alejandro