Suppose you want to add a second logo to the right of the Header

You can use these codes to Code Injection – Footer

Non-Clickable Logo

<!-- Non-clickable Logo -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.0/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $('<p class="custom-img"><img src="https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png" width="100px"/></p>').appendTo('.header-display-desktop');
});
</script>

Clickable Logo

<!-- Clickable Logo -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.0/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $('<a class="custom-img" href="https://google.com" target="_blank"><img src="https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png" width="100px"/></a>').appendTo('.header-display-desktop');
});
</script>