We don't select whether we want a virtual or in-person ceremony during the citizenship application process. The application only asks us to choose the type of certificate (e-cert or paper cert), not the ceremony format. IRCC ultimately decides whether the ceremony will be virtual or in-person, and this decision isn't based on our selection of e-cert or paper cert. We confuse the two (cert and ceremony)
For example, my spouse and I each submitted separate applications—mine in February and his in March. We both selected e-cert during application, assuming we would automatically be assigned a virtual ceremony. However, both of us were assigned to an in-person ceremony.
Hope this answers your question.