Appointment & Secondary Calendar Meet Link Issue

[Osama_Yunes]

Hi 
I have a strange issue when our staff creates an appointment slot under the secondary calendar the Meet link is not generated when the booking happens and we can't add it. If we change the slot that someone book it under the main calendar we can add the meet link to the event
At the same time when the staff created under the main calendar, the meet link was added automatically.

Any out of the space understadning 

Thanks