1. Tap on your iPhone Phone App
2. Call your 1st person
3. Have that 1st person answer your phone call
4. Text or iMessage the 2nd person to Call You
5. Tap Hold and Accept
6. Tap Merge Call
7. Lastly; Text or iMessage the 3rd person to Call You
8. Tap Hold and Accept
9. Tap Merge Call
10. Tap little blue i to see all numbers involved in your Conference Call
11. If more participants are needed > repeat steps 7-9

Good Luck and Have Fun!