You can check what version of Smart Service your workstation is running by clicking on “Help” at the top of your screen and going to the “About” option.
As you can see on the left, this workstation is on version 110 of Smart Service.
In best practice, try to keep your workstations all on the same version to avoid issues with incompatible versions and missing features that are only available in the latest updates.
The GIF below (which you can click on to expand full screen) demonstrates how to check versions.