Hi @Mcauley, welcome to our forum!
Follow the steps below to make a conference call.
- During an ongoing call, tap Add call. The dialpad opens.
- Enter a phone number, or tap the back button and select a contact from your Contacts or Recent calls list.
- When the second participant accepts the call, the first call is put on hold. Next, tap Merge (arrow pointing up) to create a conference call between all participants.
- Repeat steps 1 to 3 to add more call participants.
- To end the call, tap the End call icon.
I hope that helps and for details about the number of participants that you can add to a conference call, contact your network operator.