I have been in this situation.
I tell the people who are there. Talk to the spirit/ghost/ancestor whoever is there cohabitating the same space.
The conversation I have suggested and has worked twice so far is, "I understand that we are in the same space. If you want to stay I would ask that you not make your presence known. You are scaring and disrupting my live and the lives of those who work in this space. I pray for you to see the light and love and go to the next dimension.
One of these was a bar and the owner couldn't get anyone to work at night anymore. After he talked to Harry (the name of the ghost ) he and his staff no longer heard the steps, had misplaced keys, and rearranged furniture. They called 2 months later and said they missed him.
Life is grand.
Be
