I'm new to the Verizon Message+ app and find it a bit difficult to learn some of the functions. I've started to create some groups and sometimes I want to send a message to multiple groups at the same time. When I open the app and click on the icon to create a message, it opens "New Conversation" and the cursor is blinking in the "TO" field. I enter the group name for one group but I'm not able to add a 2nd or 3rd group. Is this possible? If yes, how?