Your Contacts is your address book. It is a list of all the people you have added and/or communicated with up to this point. When you add a new contact, their identity is automatically shown on this list.
To add contacts, simply follow the steps mentioned below:
1. Select Contacts from the left side menu.
2. Click the icon just under X on the right-hand side.
3. From here, you will be prompted to enter the contact’s name, email and organization or company name, then click ‘Add Person’ button to complete the process.
Now you can add these new contacts to a Channel.