No worries - could you maybe post a screenshot of your Matinee window? If you have a director group that looks like what I have, then setting a transition time of 1 or 2 on the first keyframe should result in a smooth blend from your player’s camera view to whatever camera actor you’re using for the Matinee. I’m not sure what the problem could be without having a better idea of what you’ve got set up, though.
The yellow MatineeActor1 box is called a “Matinee controller”, and it goes in the Level Blueprint. With your matinee actor selected in the level, you can right-click in the Level Blueprint and should see an option to add a Matinee controller for it. This will include the “Finished” pin that fires when the Matinee ends, and can also include pins for any events you might want to add via an event track.