Selective iMessage Group Sender

I need a tool or script that allows me to send text messages via iMessage to selected group members.

Requirements:
- Send to selected group members only
- Manually select members each time
- Support text messages only

Ideal skills and experience:
- Proficient in Apple’s iMessage API or related technologies
- Experience with scripting or automation tools on macOS
- Familiarity with messaging apps and group functionalities