A single user licence allows you to install DesignBuilder on a single computer. You can move the licence from one computer to the other freely. For example, if you need to use the software on a second computer you can deactivate the licence on the first one and activate on the second.
When you order a DesignBuilder single user license, you will receive an 8-digit activation code in an email. To use this to activate the software follow these steps:
Download and install DesignBuilder (if you haven't already done so).
For Simulation work, download from the main Downloads > Release Software menu option.
For UK and Ireland Energy Assessors, download from the Downloads > UK Energy Assessors menu option.
Run DesignBuilder.
In DesignBuilder, open the License dialog which can be accessed from the top Help menu
More details can be found in the License dialog help section.