How to create teams and invite people

The first task you may need to tackle is to invite people to your organization. This step would be helpful if the members joining your team aren't already listed or accessible as part of your organization, or if you plan to use your company name as your overall team. To do this, follow these steps.
  1. Click the link in the lower part of the left sidebar to Invite people. 
  2. Choose one of the three options: Copy Link, Invite Your Contacts, or Invite By Email (Figure B). 
  3. If you go with the third option for Invite By Email, enter the names and email addresses of the people you want to invite to your organization, and send the invitation.
Figure B
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If your organization is large or you want to establish multiple teams for different projects, then you'd want to create individual teams rather than use your own company as the overall team. In this case, click the link to Join Or Create A Team, and select the button to Create A Team (Figure C).
Figure C
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If you're using Teams as part of a Microsoft 365 subscription, you can create your team from an existing group. Otherwise, you'll need to build a team from scratch. In that event, you'll have two or three options. You can make the team Private, meaning people need your permission to join. You can make it Public, meaning anyone can join. In some cases, you may see a third option to create an Org-wide team in which everyone in your company is automatically a member. To exert control over your team membership, choose the option for Private (Figure D).
Figure D
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Create a name and description for your team. For example, if this team will be devoted to a specific project, give it the name of that project. Your next step is to invite people to the team. In the appropriate fields, type the name or email address of each person you want to invite. With members of your organization, you only need to start typing their name. For people outside your organization, you'll need to enter their full email address. After you've set up your first team, you can create additional teams as needed and invite people to each one.