The Bentley Licensing Tool provides details of the current status of all products and entitlements you have run locally.
You can access it via Windows Start and by searching for "Bentley Licensing Tool".

It also provides a method to reserve one or more licenses for when you want to use PLAXIS 2D or PLAXIS 3D for a period of time and you are not able to connect to the license server, see also Reserving a License – PLAXIS.