Now parking managers can issue as many access cards as they want to tenants, but our software will only allow a stipulated number in the facility at any one time.  So if a tenant has purchased 100 access cards, but has paid for only 50 reserved spaces, our software will keep track of how many spaces are available, and if none are, free access (Hard Control) is denied until other cardholders from that tenant group exit. The transaction log will show an upper case "T" to indicate a Hard denial of entry.

Software will shortly be available (Soft Control) to allow tenant overflow access. When this occurs, the transaction log will show a lower case "t" to indicate that access was not denied, but that it was a  Soft violation.

You can have as many tenant groups as you need, and each tenant group can have a different number of reserved spaces.  It's all done in software, so there is no field hardware involved except for the card readers.