Use the exact same URL as "Board URL" admin option.
On the right, use the full URL where you want to redirect. So if you want to redirect to search page https://yourdomain.com/search/
Is there any way we can change the default in 'Clear Log' from 'Delete all entries' to 'Delete entries without redirect' if only to save my sanity as I've cleared my redirects several times now accidentally
Ah. This explains what happened with my redirects. I assumed it would just remove logs and not the redirects. But now that I look at this image, I get what happened.
this is sort of unrelated. i understand that this addon has a dedicated 404 template that is pretty easy to modify with content like a search box. i was wondering if it is possible to add a search box to xenforo's own 404 page. i tried adding it in the error template but it does not just cater to 404 pages and the search box ends up appearing at a lot more locations like when you click ip link on old posts.