Is the police in charge of parking in the underground garage of the community?

It doesn't matter. The underground garage in the residential area belongs to private property and is generally managed by the property company or the owners' committee. If the underground garage in a residential area is out of order, the property management company or the owners' committee should formulate corresponding management regulations, educate and publicize the owners and tenants, guide everyone to abide by the regulations, and avoid out of order.