How do you turn on your Mic on Fortnite for Nintendo Switch?

I have only just started playing Fortnite on my Nintendo Switch which I also only just got. I know already that it is possible to talk on Fortnite - Nintendo Switch but I don't know how!! Hope someone can help!!

How do I do it (above) with a headset (with mic) connected?

Solution 1:

These are the instructions in order to enable voice chat.

1. Start Fortnite and select the top menu "Settings".
2. Go to the tab "Sound", you will find below the category of "Voice Chat".
3. Select the option to Enabled in order to activate the Voice Chat feature.
4. Then, press Apply to save your changes.

I found these instructions from here.