You can add multiple speakers for videos longer than 2 minutes by giving a prompt as shown below and then clicking on generate a video to continue.

You can also do this by selecting a flow. In this instance: use my script

After which you can click on the + sign to add multi-speakers to your video and add up to 5 speakers with 1 narrator.

For example: If you choose a male or female Clear American voice narrator, you have the option to add up to five additional speakers who have different accents.

These additional speakers will be able to speak the same language as the narrator.

You can add a speaker for each chapter and sentence in the settings section to ensure the video flows like a conversation, as shown in the screenshots below:

To add voiceovers, simply click on the + button and choose between a female or male voice. You can check this helpful article.

Next, you can navigate to the script section and select the appropriate voiceovers from the drop-down menu for various chapters or sentences.