Q: Group mms with iOS 7

Hello Judith,

Thank you for your question.  It sounds like you are missing the option to enable Group Messaging in Settings>Messages.  If MMS Messaging is turned off in Settings>Messages, you won't have the option for Group Messaging.  Try enabling MMS Messaging to enable the Group Messaging option. 

Group messages will be sent using iMessage if all recipients have iMessage enabled. If not, the conversation will be sent as MMS. Group messages use MMS even if the content is text only.

iOS: Understanding group messaging

http://support.apple.com/kb/HT5760

Thank you for using Apple Support Communities.

Best,

Sheila M.

Hi Judith,

Thank you for the additional information. Due to the nature of your issue or question you may find more information by using another one of Apple's support resources - https://getsupport.apple.com/GetproductgroupList.action

All the best,

Sheila M.