How do i create a model using one schema using mongoose?

Im still new to programming so please go easy on me lol. Im planning on creating 2 types of users in my project a normal user and an Admin user. I was able to implement a local strategy for normal users and its already working but I cant seem to visualize or grasp how i will include another type of user. do i have to create a different collection in mongo just for admin users? please enlighten me on this subject.