License your SEM deployment
You can view your license information in the Settings window. To access, click the System icon 
in the toolbar and then select Manage License.
In the Manage license window, you can view, upgrade, activate, and deactivate your SEM license. If you do not have a license or your license is inactive, Activate license is displayed in the window. Only administrators can upgrade, activate, and deactivate a license.
may vary depending on whether your license is active or inactive.
If you do not have a license key, click Purchase license key. SEM directs you to the available licensing options located on the SolarWinds website.
See SEM license activation to activate your license online or offline.
See Update the SEM license to update your license.
After you activate your license, the Manage license window displays your license information with options to upgrade or deactivate your license.
See the following sections for more information.