You can install the Maxon App on as many machines as you like.
You can activate and deactivate your license by using the following;
Using the menu icon.
Press Release License.
MyMaxon - https://my.maxon.net
You can release the licence from here if you are not at the machine to deactivate it.
Simply use the Release button, next to the licence you wish to free up.
Please note, you cannot assign a licence via the MyMaxon account to a machine, simply log in to the machine and the licence will assign itself.