lookup field in advanced search form

Uroš,
to set up one of your field as dropdown on the Advanced Search page proceed to the Visual Editor tab, choose Search page, double click on the field, select Lookup wizard option and set up all required settings.

<img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=reply&id=15159&image=1&table=forumreplies' class='bbc_emoticon' alt=':rolleyes:' /> I found it, thank you