Hey there OGBCWOW,
Thanks so much for using Apple Support Communities.
Group messages are a great way to stay connected to multiple contacts at once and we're happy to help you get this set up in the best way possible for your needs. To start, we want to recommend that you go over the information in this article as it is going to lay the groundwork for everything you can do with Messages when it comes to group threads: Send a group text message on your iPhone or iPad - Apple Support
The section below can be found on that page under "Send a group text message":
1. Open Messages and tap the Compose button
.
2. Enter the names or tap the Add button
to add people from your contacts.
3. Type your message, then tap the Send button
.
To send a group MMS message on an iPhone, make sure MMS Messaging is turned on. Go to Settings > Messages and turn on MMS Messaging. If you don’t see an option to turn on MMS Messaging or Group Messaging, contact your carrier to see if your plan supports Group MMS Messaging.
With iOS 15 and iPadOS 15, photos, links, and other content that are sent within the group message will appear in the Shared with You section of the corresponding content apps. If you don't want to see the photos and other content in Shared with You, go to the group message, tap the top of the thread, then turn off Show in Shared with You.
We hope this does the trick for you!
Cheers.