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

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.

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