Reply To: Makom Kavua – Being Kicked out of your Seat

I presented this question to Maran Reb Chaim Kenievsky. He answered the following.
One may tell a person sitting in his makom kavuah to kindly move, even if there is not another seat available, (especially if he is a member and paid for that seat, this applies to seats he purchased for his children so that they may sit next to their father).
Rav Chaim shlita said it is the responsibility of the gabai to ensure guests will be accomadated with a place to sit. He added that the shul should have folding chairs available for such a situation