When you first sign in, there are 2 potential screens that you'll see...
If you have never signed in before and no one has created an account for you, you will see this screen. Where you can create your workspace. However, if you are awaiting for someone to create an account, just sign out and sign back in when they have
If you have an account created for you, you will be taken to that workspace. This is the screen you will see, and from there, you can continue to work in that workspace.