There are three ways of adding a contact to your list. You can do it either by email, search, or code. All three of these options are accessible by tapping the "+" icon in the top right corner of the contacts screen.
To add a contact by email, select "Invite by email" in the add contacts menu, and fill in their email address and preferred language. If the email address you enter already has a CryptTalk account, it will be sent a connection request. If not, they will be sent an invitation to join CryptTalk. You can also invite contacts out of your address book by tapping the icon in the top right corner.
Adding contacts by code is the most direct method. Select "Connect with code" from the add contacts menu, and find the 10-digit personal code. Give this code to the other person, and they can enter it into their own Connect with code menu to get you as a contact. Each code can only be used once.
To search for a contact within your organisation, select "Search for users" in the add contacts menu, and enter part of or the whole name of the person you are looking for.
Note: Adding a contact by search or code are only available to users of CryptTalk Pro.