After you have your animation ready, we need to play it in the actual game.
Before we start working, you should have a level opened and have a completed Matinee. For assistance with this, check out the Creating an opening cutscene recipe.
You need to execute these steps to play a Matinee via Blueprints:
MatineeActorobject inside the scene (it looks like a clipboard) and then from the top toolbar, navigate to Blueprints | Open Level Blueprint.
Alternatively, you can go to the Scene Outliner tab and select the object from there, either by scrolling down until you see it or typing in
Matinee in the Search ...