Describe the changes in the doc and link to your dev story:

1. - [x] Mandatory: Add the required version to the Fix version/s field.

2. - [x] Mandatory: Choose the type of documentation change or review.

• [x] We need to add a new document to an existing section

3. - [x] Mandatory: Find the link to where the documentation update
should go and add it to the recommended changes. You can either use the
published doc or the staged repo for this step: See proposed section below

4. - [x] Mandatory for GA content:

• [x] Add steps, the diff, known issue, and/or other important
  conceptual information in the following space: See content below

• [x] *Add Required access level *(example, *Cluster
  Administrator*) for the user to complete the task: Cluster Administrator

• [x] Add verification at the end of the task, how does the user
  verify success (a command to run or a result to see?)

• [x] Add link to dev story here:

5. - [ ] Mandatory for bugs: What is the diff? Clearly define what the
problem is, what the change is, and link to the current documentation. Only
use this for a documentation bug.

Proposed content{}

Proposed section: New sub-section in 1.9 Host inventory introduction 

https://docs.redhat.com/en/documentation/red_hat_advanced_cluster_management_for_kubernetes/2.14/html/clusters/cluster_mce_overview#cim-intro 

OR new sub-section under 1.7.4 Cluster import https://docs.redhat.com/en/documentation/red_hat_advanced_cluster_management_for_kubernetes/2.14/html/clusters/cluster_mce_overview#import-intro

Proposed Title: Managing your hub with central infrastructure management

OR Importing your hub using central infrastructure management

Content:

Central infrastructure management does not automatically manage your hub cluster. You can enable this feature by doing the following:

Prerequisites:

You've enabled central infrastructure management (CIM - link to https://docs.redhat.com/en/documentation/red_hat_advanced_cluster_management_for_kubernetes/2.14/html/clusters/cluster_mce_overview#enable-cim )

To enable this feature:

Annotate the AgentServiceConfig CR to enable local cluster import

oc annotate agentserviceconfig agent agent-install.openshift.io/enable-local-cluster-import=true 

To verify this feature was enabled:

Check if an InfraEnv CR for the `local-cluster` was created

oc get infraenv -n multicluster-engine 

Now you are able to add and manage additional hosts to the hub cluster through central infrastructure management.

For more details about adding hosts, see

Adding hosts using discovery image: https://docs.redhat.com/en/documentation/red_hat_advanced_cluster_management_for_kubernetes/2.14/html/clusters/cluster_mce_overview#add-host-host-inventory

Automatically adding bare metal hosts: https://docs.redhat.com/en/documentation/red_hat_advanced_cluster_management_for_kubernetes/2.14/html/clusters/cluster_mce_overview#auto-add-host-host-inventory

Relevant links

PR that caused the change: https://github.com/openshift/assisted-service/pull/6606

https://issues.redhat.com//browse/MGMT-18448 

note: this change has been in since ACM 2.11 and was never documented. I've only added fix versions up to ACM 2.12 due to the n-2 note

Slack threads:

https://redhat-internal.slack.com/archives/CUPJTHQ5P/p1757320852366019

https://redhat-internal.slack.com/archives/CTDEY6EEA/p1753365831385369?thread_ts=1753257362.433809&cid=CTDEY6EEA