How to use different tasks in a cluster with the same ip

hello to all, after getting launch the cluster with its services and that work in my network lan in 2 nodes (leader and worker), I need to know how to do load balance with the same ip, is this possible?
Or do I have to indicate to the DNS server the 2 ip address of the 2 host ?.

cluster10

cluster11

cluster12-no

cluster6

cluster8

cluster9

Do I have to take an additional step?

thank you