In the left frame, right-click Users -> New -> User. Enter the first name and the last name. If you have a middle initial, enter it too. In the User Logon Name, create a usernmae that can be a combination of the first letter of the first name + the last name. Here is an example:

If you have a middle initial, you can include it as the second character. Here is an example:

Click Next. In the second page of the wizard, type the password as Password1 and press Tab. Type Password1 again. Make sure the User Must Change Password At Next Logon check box is checked:

Click Next. In the third page of the wizard, verify the summary of the information you had specified:

If something is wrong, click Back and change it. If everything is alright, click Finish.