Cisco ASA Dynamic NAT with DMZ

Hey everyone I have a 5510 ASA and I’m trying to figure out setting up dynamic NAT with a range or pool of IPs. I’m having trouble with this task as the outside interface is setup with the first available ip out of my 5 static IPS I have. I then want to use a range of IPs to perform dynamic NAT round robin for my DMZ to outside and my inside int to the outside. Is there a better way to set this up and prevent from getting the error of the ips overlap ??