The answer is just about anywhere!
You are free to install as many copies of the ‘front end’ of the system as you wish. The Users and all your data are held in the cloud, therefore all you need is an internet connection. If you have a laptop with WIFI for instance you could install the linking software on it and whenever you need to work, just log in. All access attempts are logged by us, so you will know if anyone else has tried to login with an incorrect password.
This means while you are waiting for a client you could finish note updates, or maybe just at home where it is a little quieter than your workplace environment for instance.