How to use multiple shaders?

I have downloaded the Toon Shader from the Unity Asset Store (Toon Shader FX | Fullscreen & Camera Effects | Unity Asset Store) and successfully integrated it into my current game project. However, I am interested in incorporating an additional shader effect, specifically the Fresnel effect shader created using Shader Graph as demonstrated in this tutorial (https://youtu.be/Ar9eIn4z6XE).
My objective is to apply this Fresnel effect shader, or any other desired shader, to certain game objects while also having the Toon shader applied. Despite conducting thorough research online, I have been unable to find a definitive solution, as my understanding is that a material can only be associated with a single shader.
Do I need a way to use both shaders at the same time or just somehow combine the both shaders into one? Whatever the best solution is please guide.

Could you kindly assist me in resolving this issue and provide guidance on how to effectively apply multiple shaders.