Please go to Admin > Channels > Portals > Customize > Edit theme > Layouts & Pages and make the following changes.



Header:

<script>

jQuery('#header-tabs a[href='/support/solutions']').text('Knowledge base');

</script>

Footer:

<script>

jQuery('.footer-links a[href='/support/solutions']').text('Knowledge base');

</script>


Search results:

<script>

jQuery('.nav-filter li a[href^='/support/search/solutions?term']').text('Knowledge Base');

</script>


Note: 


1)This can only be done on accounts in the Estate and Forest plan (older plan structure).

2)If multiple languages are set up on the helpdesk, you would need to specify the languages.


For example, if the helpdesk languages are English and French, here is the script for header:


<script>
jQuery('#header-tabs a[href="/en/support/solutions"]').text("Knowledgebase");
jQuery('#header-tabs a[href="/fr/support/solutions"]').text("Base de connaissances");
</script>

To learn more about portal customization, click here.