diff --git a/FAQ.md b/FAQ.md
index cb04830..eff77f5 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -1349,6 +1349,10 @@ Here is an example of the `custom.txt`.
  codec-preference=av1
 ```
 
+By default, all options are default option, if you want to add override options, please put them under `override-settings` section as above.
+
+For more options, please check https://rustdesk.com/docs/en/self-host/client-configuration/advanced-settings/. Only controlling side options work.
+
 # Does ip whitelist supports CIDR?
 
 Yes, we added it, https://github.com/rustdesk/rustdesk/pull/2281