Merge pull request #59719 from rohennes/TELCODOCS-8980-rhel-nodes

OCPBUGS#8980: You must follow manual steps to add RHEL nodes on IPI

Author: mburke5678

modules/rhel-compute-overview.adoc

@@ -8,9 +8,11 @@
 [id="rhel-compute-overview_{context}"]
 = About adding RHEL compute nodes to a cluster
 
-In {product-title} {product-version}, you have the option of using {op-system-base-full} machines as compute machines in your cluster if you use a user-provisioned infrastructure installation on the `x86_64` architecture. You must use {op-system-first} machines for the control plane machines in your cluster.
+In {product-title} {product-version}, you have the option of using {op-system-base-full} machines as compute machines in your cluster if you use a user-provisioned or installer-provisioned infrastructure installation on the `x86_64` architecture. You must use {op-system-first} machines for the control plane machines in your cluster.
 
-If you choose to use {op-system-base} compute machines in your cluster, you are responsible for all operating system life cycle management and maintenance. You must perform system updates, apply patches, and complete all other required tasks.
+If you choose to use {op-system-base} compute machines in your cluster, you are responsible for all operating system life cycle management and maintenance. You must perform system updates, apply patches, and complete all other required tasks. 
+
+For installer-provisioned infrastructure clusters, you must manually add {op-system-base} compute machines because automatic scaling in installer-provisioned infrastructure clusters adds Red Hat Enterprise Linux CoreOS (RHCOS) compute machines by default.
 
 [IMPORTANT]
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