Mine Rotation

Hello and Welcome!

This question looks like it is about the game EVE Online.

You can set this by not using the default mining bot but this mining bot instead: This mining bot for EVE Online contains more features and also has a configuration section to support picking mining sites with bookmarks. On the description of this bot I see it asks you to enter the name of a bookmark of your preferred mining site:

You can download this bot and then open it in the Sanderling app via Automate Something ElseLoad Bot From Local File.
For configuration of bots in the Sanderling app, we have this guide: How To Configure A Bot