Unreal Engine Cinematic Creator - Video Game Design Course

Hello I am learning the Sequencer Introduction section, on the Unreal Engine Cinematic Creator - Video Game Design Course.

My issue is when I click on a viewport and then click on the Lock viewport to shots, it seems to lock both of my viewports, does anyone know how to only lock the viewport on the left please?

Many Thanks
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Are both the viewports set to camera view?

Hello,
Thank you for replying.

How would I check this please?

(I also found if I right click on my left viewport which I want to use as seeing through my camera. and then click lock cine actor 2(circled in red) it only locks my left/selected viewport, but when I click on lock viewport to camera cuts, circled in blue it locks both viewports to the camera)

Many Thanks