Added audio narration to certain slides - how do I stop it with layers?

Hello,

I am working on a project in storyline and recently added audio narration to certain slides. When the user lands on the slide, the audio narration automatically begins. I've added a seek bar with the ability to play/pause.

My issue is that many of the slides that include audio narration have multiple layers and the audio narration continues across the layers until finished.

I'm hoping to get support on two things:

1. Is there a way I can prevent the user from clicking next until the audio narration has completed?

2. If there is not, is there a way to pause the audio when the user leaves the slide or layer I inserted it on?

i.e - a base layer has a paragraph of text. The audio narration reads the text aloud and also includes additional, relevant information. However, if the user clicks Next, the audio continues playing until finished.

Thank you for any and all support!