USERS > How do I allow other members to just see or follow a process - even though they don't have any task or action assigned?

The good news is: if you assign a member to a single task, they will automatically be able to see the entire process! 

So, just create a single place-holder task, and those assignees will be able to follow the entire process. 

See it in action here: 

Alternatively: You can prevent everyone  but the person assigned from doing a task. See how here.