You can't set anything
The way I was trained to set a witness post, not to be confused with a witness monument was that the stake would sit on the clients property, facing the corner at 45 degrees.
The justification was that it would inform anyone approaching the monument from off the property of it's existence and stated position. Further the stake would be on the clients property and therefore to disturb it would involve trespass.
I have thought before that putting the witness post right on line may be better because since it stands proud it can be seen where the monument at ground level is not.
They do not have the authority to forbid your setting the point. I can certainly relate to stepping back from the conflict, but dunno about the note.
If we are required to record and required to set, then the wishes of the client or adjoiners plays second fiddle no? I can certainly think of many scenarios where the client may wish to not set anything or certainly to do it as discretely as possible.
Is it okay to entertain such requests?
I was trained to set a witness post
That’s the same with me. I usually try to set it (with a cap identifying it as a witness corner) online but that’s not always possible.
I would go around to the alley and set a bar in the asphalt at what I have determined to be the true corner (based on sound evidence). This is not on what the neighbors believe to be their property. They would have a great deal of fun attempting to get that two-foot bar out of the asphalt.
I was impressed that this link was on the ASPLS website when I came to AK. If you haven't read it you should.
I had this argument, several years ago, with Jerry Broadus. I told him that most of the corners I set; 3/4's of it falls outside of my clients property. What if the other 3 property owners don't want my corner protruding into their property? He kind of laughed and said; they have no authority. What are they going to do; shoot you? If it goes that far, you should probably leave and come back with the sheriff. If they assault you, well, they're probably going to jail.
Just set the damn corner and tell mister neighbor to go pound sand...