How to use 2FA on custom login form in Modal popup

Hi
how 2FA work with custom login form. Which hooks we can use.

here is the code of login form.

<form id="login" action="login" method="post">
                                <p class="status"></p>
                                <p class="login-username">
                                    <label for="username"><?php echo esc_html__('Username or Email Address','mydm'); ?></label>
                                    <i class="fa fa-user-o" aria-hidden="true"></i>
                                    <input id="username" type="text" name="username" placeholder="<?php echo esc_attr__('Username','mydm'); ?>" required>
                                </p>
                                <p class="login-password" style="position:relative">
                                    <label for="password"><?php echo esc_html__('Password','mydm'); ?></label>
                                    <i class="fa fa-pencil-square-o" aria-hidden="true"></i>
                                    <input id="password" type="password" name="password" placeholder="<?php echo esc_attr__('Password','mydm'); ?>" maxlength="25" required>
                                    <span class="show-password-input"></span>
                                </p>
                                
                                <div class="row-buttons">
                                     <p class="login-submit">
                                        <input class="submit_button" type="submit" value="<?php echo esc_attr__('Login','mydm'); ?>" name="submit">
                                    </p>
                                    <?php if (  get_option('users_can_register')) { ?>
                                        <p class="btn-register-p">
                                            <a class="btn btn-register" id="register-modal"><?php echo esc_html__('Register','mydm'); ?></a>
                                        </p>
                                    <?php } else { ?>
                                        <p class="um-notice err text-center"><?php echo esc_html__('Registration is currently disabled','mydm'); ?></p>
                                    <?php } ?>
                                </div>
                                <div class="clearfix"></div>
                                <p class="login-remember">
                                    <a class="lost" href="<?php echo wp_lostpassword_url(); ?>"><?php echo esc_html__('Lost your password?','mydm'); ?></a>
                                </p>
                                <?php wp_nonce_field( 'ajax-login-nonce', 'security' ); ?>
                            </form>

Thanks