Zoom Settings

Hey there, 

Im totally new to zoom so sorry for any dumb questions.

Right now im on the free plan and i want to host a webinar for a product i'm launching. 

My question is, what settings do i need to make, so that my participants cant see who else is in the call. 

What plan do i need in order to do this. 

I haven't found any information about this. 

thanks