Before you start creating a team you need to create a Competition then a Club, see: Create a Competition, Create a Club
This article will cover step-by-step on how to create a team. If you want to know more about what a Team is and why it is important, see: What are Clubs & Teams?
In the article Create a Club the process of adding a Team follows straight on. After creating a Club you will be greeted with a screen like below.
From the drop-downs select the options that are relevant to the Team(s) that you wish to associate with your particular Club. In the below image Red Demons Men & Women’s First Teams have been added
When happy, hit the red button that displays Add teams to club at the bottom of the screen
You will be back at the main dashboard with the two newly added Teams
If you want to add more Teams, hit the red button in the top right corner of the page displaying Add teams to club
Or that can be done by clicking the Competition tab
Then select your Competition and select Create team