boards customization

bhupen Yes, this can be done, this is a custom page and not a board page, so you can make changes to this specific page easily.

For the first requirement, you can try:

Write this code in header inside the wrapper.

<#if http.request.url?contains("/t5/custom/page/page-id/heldiver")>

<@liaAddScript>
(function($) {
        $(document).ready(function() {
 
	var watermark = 'Search HELLDIVERS Forums';
 
	//init, set watermark text and class
	$('#messageSearchField').val(watermark).addClass('watermark');
 
	//if blur and no value inside, set watermark text and class again.
 	$('#messageSearchField').blur(function(){
  		if ($(this).val().length == 0){
    		$(this).val(watermark).addClass('watermark');
		}
 	});
 
	//if focus and text is watermrk, set it to empty and remove the watermark class
	$('#messageSearchField').focus(function(){
  		if ($(this).val() == watermark){
    		$(this).val('').removeClass('watermark');
			}
		});
	});
})(LITHIUM.jQuery);
</@liaAddScript>

<#else>
<!-- other cases -->
</#if>

 2. As this is a custom page, so you can add a Custom Component on the layout of this page from Studio, and keep it under the search bar, and add your description in the custom component you just created.

I hope this helps.