Set an IP release timeout in Assembler > Infrastructure > Administration > Settings to a value from 0 to 30.
See the IP Addresses section located under Network resources in VMware Aria Automation
More details available in our documentation at: https://techdocs.broadcom.com/us/en/vmware-cis/aria/aria-automation/8-18/assembler-on-prem-using-and-managing-master-map-8-18.html
In order to reduce the IP address release wait period which is set to 30 minutes by default, follow the below steps: