How to add multi-speakers in the video and change the speaker?

You can add more than 1 speaker in the video from the Edit script section.

Step 1 - Click on invideo AI 2.0

Step 2 - Select any workflow. In this instance: YouTube explainer

Step 3 - Click on the + sign to add multi-speakers to your video

[The video will add 1 narrator but you can navigate to Edit Script and start selecting different speakers in each chapter/sentence]. 

Step 4 - You can add up to 5 speakers and 1 narrator:

For a video which is already generated, you can edit your video further by going to the Edit Script section:

From here you can select different speakers for each sentence/chapter and change their playback speed to anywhere between 0.5x to 1.50x

You can also change the speaker's voice, i.e. if speaker 1 is American female, you can command from the magic box to change it to Indian female.