Registration/Log In

1. Contacts

1.1. Add contact

1.2. Search contact

1.3. Add/delete Favorites

1.4. Remove from list

2. Calls

2.1. Audio Call

2.1.1. Incoming/Outcoming call

2.1.2. Group Call

2.1.3. Missed Call

2.2. Video Call

2.2.1. Incoming/Outcoming Video Call

2.2.2. Group Call

3. Settings

3.1. Windows Hello

3.2. Notifications

3.2.1. Notifications if on

3.2.2. Notification is off

3.3. Sound notifications

3.4. Save file on device

4. Chat

4.1. Select contact

4.2. New message

4.3. Add File/Photo/Video

4.4. Create group chat

4.4.1. Add people to chat

4.4.2. Remove people from chat

4.4.3. Rename chat

5. Windows Hangouts