To enable conference calling on iPhone, you only need to click on a couple of buttons, namely Add and Merge. In this article, we'll walk you through this process in detail and also walk you through some of the advanced conferencing features. The next time you want to talk on the phone with several people at once, it won't be too difficult for iPhone users.
Steps
Method 1 of 2: How to add and merge calls

Step 1. Call the first subscriber
Click on the phone icon at the bottom of the desktop. Select a subscriber from the category "Favorites", "Recents", "Contacts" or dial the number on the keyboard. If you want to call a subscriber from the "Contacts" section, select the subscriber you need, and then click on his phone number to call him. The phone will automatically make a call. Similarly, you can dial a subscriber from the "Favorites" or "Recent" sections. To do this, simply click on a contact from the list. To make a call using the keypad, enter the phone number manually and then press the call button.
Note that other participants in the conference call do not need to have an iPhone. They will be able to participate in conference calls on any phone make and model. This article is for iPhone conferencing only

Step 2. Pay attention to the options that appear
While the call is in progress, six options will appear on the screen: Off. Sound, Keys, Speaker, Add, FaceTime and Contacts.

Step 3. Add another subscriber
When you are connected to the first subscriber, the "Add" button will light up. Click on it to connect a third party.

Step 4. Call the third party
When you are connected to the first subscriber, you will have the opportunity to call someone from the "Contacts" section or simply dial a phone number. Both can be done using the options on the screen.
- When you click "Add", you will put the conversation with the first subscriber on hold. Let them know in advance that you will put the call on hold for a while.
- Please note that until you are connected to the first subscriber, the "Add" button will be disabled, as it cannot work until you are connected to the first subscriber.
- You can even add to the conference those subscribers who themselves called you on the phone. When they call you, press the "Hold + Answer" button. After answering the call, click "Connect". If you don't want to answer the incoming call, click Send to Answering Machine. If you want to answer the incoming call and end the conference call, click the End button.

Step 5. Merge calls
When you are connected to the third subscriber (through the second call), click on the "Connect" button. It will appear in the same place as the "Add" button. Thus, you put the first subscribers on hold and add a new participant to the call.

Step 6. Add more subscribers
Up to five parties can be connected to a conference call, so repeat the steps for the Add and Connect buttons as many times as necessary. As long as you add new participants to the conference, the previous callers will be on hold.
Method 2 of 2: How to manage conference calls

Step 1. Disconnect this or that subscriber
Start by clicking on the conference button (blue circle with an "i" inside at the top of the screen). Then click on the red circle (with a phone icon inside) next to the subscriber you want to disconnect from the conference. And finally, press the "Hang up" button, after which this subscriber will be disconnected from the conference call. This will not affect communication with other conference participants in any way.

Step 2. Have a private conversation with one of the conference participants
First of all, click on the conference button (blue circle with an "i" inside at the top of the screen). A Private button appears next to each caller in the conference call. Click on this button next to the person with whom you want to have a private conversation. If you want this subscriber to then return to the conference call, click on the "Connect" button.

Step 3. Turn off your microphone
If you do not want someone to hear you during a conference call, click the Off button. sound". This is one of the six menu buttons on the call screen. This will turn off your microphone and still hear the other participants in the conference.

Step 4. Turn on the speaker
This allows you to hear the callers from the conference without having to hold the phone to your ear. This is especially useful if you are recording something or doing other things during a call. Just click on the "Speaker" button. This is one of the six menu buttons on the call screen.