To add someone to your GroupMe group as an administrator, follow these detailed steps:

1. Open GroupMe App: Launch the GroupMe app on your device.

2. Select the Group: Navigate to the specific group chat where you want to add a member.

3. Access Group Settings: Tap on the group's avatar (profile picture). This is typically found at the top of the chat screen.

4. View Members: From the menu that appears, select "Members." This will show you a list of all current members in the group.

5. Add Members: Look for an option labeled "Add Members" or a "+" icon. Tap on this option.

6. Search for the Person: A search bar will appear. You can enter the name, email address, or phone number of the person you want to add.

7. Select the Person: Once you find the person in the search results, tap on their name.

8. Confirm Addition: Finally, tap "Add member" to complete the process. The person will now receive a notification to join the group.

If they are not already on GroupMe, they may need to create an account or download the app to see the invitation.

Following these steps will help you effectively add someone to your group in GroupMe - learn more - learn more - learn more - learn more.