1. Here's how

1.1: You can buy additional Seats for a License Key at our online store or from your local reseller:

• Lumion Website: Buy additional Seats page
• Lumion Website: Find a reseller page

1.2: If you own a Subscription License Key purchased directly from our website, you can add additional Seats to your License Key directly in your Lumion Account. 

Lumion Account

Else, please contact your local reseller (as in 1.1 above).

 See Also:

• Knowledge Base:  What options does my Lumion Account offer?