It may happen that you want to leave a few people out of your group message. For example: in your Family Life group, when a couple has a wedding anniversary, the rest of the group bring in treats for a celebratory snack. So, the message needs to EXCLUDE the happy couple.
Here's a ninja trick workaround.
Step 1: Choose the person or people you wish to temporarily remove.
Step 2: Click on the Actions menu.
Step 3: Choose Do Not Call if you are sending a voice message -OR- Unsubscribe (Texts) if you are sending an SMS or MMS.
The people you chose will not receive your message.