Question About Threshold Tool in Segmentation

I have a question regarding the threshold tool in segmentation. When I set the threshold value, several segments appear merged together in one segment. I would like to separate each of them into individual segments. Could you please advise me on how to do that?

Many options. 1. lower the threshold if they are really not connected. 2. Use the scissors tool 3. etc etc

You may be interested in the “Islands” effect where you can “Split islands to segments”.