I have taught my cat that the words "my spot" mean she has approximately 5 seconds to move on her own or I will pick her up and put her on my lap when I sit there. She knows where I sit and where she can sit if she doesn't want to be disturbed.
The tech actually cracked a joke somewhat like that at the vet lol. But they love her there she’s honestly a sweet, talkative cuddle bug unlike her sister Abaddon, who doesn’t seem to like anyone but me and dares you to fuck around and find out.