I'm a beginner and I'm trying to figure out how to enable web search in Open WebUI, the problem is that online (https://docs.openwebui.com/features/chat-conversations/web-search⧉) they tell you to go to Profile > Admin > Web Search but my UI doesn't look like that, I have no profile and no admin/web search section. MCP asks for a server URL but I'm not sure what to put there, I just want to test web seraching capabilities.