Parkade is a private parking group for your building. Whoever creates the group can decide just how private you want it to be!
Your options include:
Public: Anyone can join
This is the most public type of group. This is ideal for a place that has low security concerns, and likely doesn't have a gate preventing others from accessing its garage. Anyone will be able to join the group and book a parking spot.
The least secure of private groups, there's still quite a bit of security in place with this type of group. It will be private, meaning no one can join unless the lot creator approves their request to join (which will include their name and their "Connection to the lot". However, anyone can search for your lot and request approval to join.
Private: Any member can invite another member
With this type of group, only people who are approved by the lot administrator or are invited can join the group. Anyone who has been approved to join the group will be able to invite others.
Private: Only the lot creator can send invitations
The most secure, this group will be very restricted. New members must be approved by the lot administrator, or invited — but only the lot creator can invite new people to join! Members cannot invite other members.