Dear Martin
You can implement the Search Feature into a project/page using +More - +HTML:

The following is raw HTML so it's unlikely that it has any styling or CSS. It will probably not appear as it has no height/width or font-size. For this reason we should add a Class to it for easy targeting later. class="custom-search"
<a href="#search" class="custom-search" data-type="custom"><span>WHAT I WANT TO CALL MY SEARCH</span></a>
Example CSS (basic)
.custom-search {
font-size: 33px;
}
The Custom CSS can be added via > Lay Options > Custom CSS & HTML >
https://laytheme.com/documentation/custom-css-styling.html
Best
Richard