What licensing agreement is required for VR presentations delivered to clients as part of a broader range of work?

We at DCA Design are a product design consultancy working in transport/ medical and consumer sectors.
We believes that VR will be of interest to our existing and potential clients.

User Scenarios

• The ability to present a VR capability to clients. This would allow us to engage its potential uptake.

• Integrate it into existing work flows.

• Offer the service of translating CAD data into VR as a service

As we are still exploring and understanding this capability we need flexibility and would like to obtain a licence to test it.
This would need to royalty free and so what are the options

You can do all of that under the regular EULA. It’s royalty free if the Unreal Engine-based product is not sold or monetized. It seems like you’re just doing it for demonstration purposes.