20 week anatomy scan question

Does anyone know if you can have 2 people come in with you for this ultrasound? Mines next week, obviously baby daddy will be there but his mom is wanting to be there too, didn’t even ask if she could come, just saying she’s gonna be there. Does anyone know is they allow another person besides the dad there during this scan or? It’d be stupid for her to try to come and not be able to go back there for it ?