Can I record a RemoteSpark session?

At present time, there is no embedded recording functionality within RemoteSpark - but there are workarounds to record the session outside of RemoteSpark.

To record from the PC:

You can use video screen-capture software to record the screen during video calls from the PC, including from within Microsoft PowerPoint.

To record from the HoloLens:

You can also take video using Mixed Reality Capture on the HoloLens to record what the HoloLens is seeing.