Galaxy s 5 Do the 2 people receive the same message

fishingjoe Posts 1 Registration date Friday October 23, 2015 Status Member Last seen October 23, 2015 - Oct 23, 2015 at 10:43 PM
please explain how this works. I am not sure . If for example you send a message to one person and then you realize you have in your settings the check box check beside another person.. Does the 2 people receive the same message?? on samsung Galaxy s 5 .