In the Teams Applications You can make calls to a single person or to a group of people through a click a button.
When in Teams chat with another member of staff all you need to do is go to the top right corner of the window and you will see these two options
The one on the left will be your video call. this is the equivalent to FaceTime or Skype where you will be able to video call the other member of staff.
The one on the right means that you will only be on audio call to the other member of staff.
This feature can also be used in groups on Teams
This is done through the " Meet Now" Function underneath the conversation Bar
This function will allow people to join the call and it can either be a video call or audio call with people who are in the group this can be handy for meetings whilst people are at different sites.
If there are any further problems with this please contact the IT Support team.