When you are an individual or have a company with one developer you are allowed to use our components with a Single Developer license.
When you have grown and you now have more developers you should upgrade to a Site License (we really hope that this is because you are successful so congratulations are in order).
For that we have an option for all Commercial Components 'UPGRADE from a Single Developer license to a Site license'.
You can find this option under the tab 'Buy Now' of the Component(s) of your choice.
When you are not sure about this you can always create a ticket.