Update Source periodically

Good Morning

Is there a way to update a source more often, or rather a certain time?

I can’t seems to find a setting and searching resulted in sources refresh once a day ?

Update what sources for what reason?
For Custom Channels (M3U) you define, the Playlist and XMLTV refresh can be changed in their settings.
Other sources only update EPG guide data once a day between 9-11AM local time.

Where in the settings can I define playlist. I have a custom m3u. I don’t see them anywhere.

Gear dropdown next to your source, Edit Settings

If you need it to refresh the playlist more often than once a day, you can use this API endpoint, modifying it for your server's ip:port and M3U source name

Worked perfect. Thank you !!!