After a user types their search query, they should be able to start the search by pressing the Enter key.
On my desktop computer, I have to click on the "Search" button on the screen in order to start a search (if the page has search results, I have to press the magnifying glass).
Edited to add: After posting this, I realized that this issue may be browser-related, not caused by Kagi. In Edge, Kagi starts searching if I press the Enter key, but not in Pale Moon (the browser I use most often). I'll check my Pale Moon settings and see if there's something that's causing this behavior.
