Hi,
here is my problem:
The search option works for the administrator profile, but not with the anonymous profile.

Can anyone let me know what I must tick/untick & where?

Thanks in advance,

Go to:
Administration
System
Groups

then click on "Modify" link on the Anonymous group and then make sure that "Search" is checked on the "Module Access Rights"

This Q&A was found on XOOPS Web Application System : https://xoops.org/modules/smartfaq/faq.php?faqid=671