Before creating a login, the person for whom you want to create the account must have a user account.

The formula to programmatically create a login is:

CREATE LOGIN loginName { WITH <option_list1> | FROM <sources> }

<option_list1> ::= 
    PASSWORD = { 'password' | hashed_password HASHED } [ MUST_CHANGE ]
    [ , <option_list2> [ ,... ] ]

<option_list2> ::=  
    SID = sid
    | DEFAULT_DATABASE =database    
    | DEFAULT_LANGUAGE =language
    | CHECK_EXPIRATION = { ON | OFF}
    | CHECK_POLICY = { ON | OFF}
    | CREDENTIAL =credential_name <sources> ::=
    WINDOWS [ WITH <windows_options>[ ,... ] ]
    | CERTIFICATE certname
    | ASYMMETRIC KEY asym_key_name<windows_options> ::=      
    DEFAULT_DATABASE =database
    | DEFAULT_LANGUAGE =language

To let Microsoft SQL Server generate skeleton code for you, on the Standard toolbar, click New Query to get a text editor. In the Template Explorer, expand the Login node, drag Create SQL Login Must Change Password and drop it in the empty text editor:

-- =================================================
-- Create SQL Login Must Change Password template
-- =================================================

CREATE LOGIN <SQL_login_name, sysname, login_name> 
	WITH PASSWORD = N'<password, sysname, Change_Password>' 
	MUST_CHANGE,
	CHECK_POLICY = <check_policy,ON or OFF, ON>;
GO

After creating a login, a user can use it to connect to the server. There are many options, as we will see in the next few sections.

To visually create a login in Microsoft SQL Server, in the Object Explorer, expand the Security node. Right-click Login and click New Login...

This would display the Login - New dialog box: