Are we limited to one SSH login per account?
Or is there a way for us to create multiple users?
Are we limited to one SSH login per account?
Or is there a way for us to create multiple users?
You should be able to ssh in multiple times/over multiple connections
Is it possible to do so with additional sets of credentials?
Not to the same account. You could use the teacher/student relationship to give one account access to the files of another (the teacher account has access to the student account)