To create a user, you must enter their login and name, specify their own status and press the Add User button. The detailed description of the user properties can be found in User Management. 

After modifying the user properties, press either the Save button, Cancel button or the Go to parent button. When the Save button is pressed, the system will save the changes. When the Go to parent button is pressed, the system will save the changes and open the List of Users tab of the upper level task. 

It is better to use the Save button if you want to add one user, while the Go to parent button is useful when you want to add several users at the same time.