I have never met someone new to Civil 3d who knows what this button does. Change it to more of a standard looking button like OK, but with the text "Change Reference Point". I have had people going to this page, using math to change the start station value to get what they want, but don't know this button is available.
![brianstrandberg_0-1714491224609.png brianstrandberg_0-1714491224609.png](https://forums.autodesk.com/t5/image/serverpage/image-id/1356653i0C52E5C28B273E1F/image-size/medium?v=v2&px=400)