Skype is a free video calling interface.
- Set up an account: https://support.skype.com/en/faq/FA12413/how-do-i-create-a-new-account-for-skype
- Schedule a call: https://support.skype.com/en/faq/FA34876/how-do-i-schedule-a-call-in-skype
- OR answer a Skype call: https://support.skype.com/en/faq/FA34859/how-do-i-answer-a-skype-call
- OR set up a group chat: https://support.skype.com/en/faq/FA34799/how-do-i-create-a-group-chat-in-skype-on-desktop
- Screenshare: https://support.skype.com/en/faq/FA34895/screen-sharing-in-skype
