Create an informative issue (See each section, incomplete templates/issues won't be triaged)

Using the current documentation as a model, please complete the issue template. 

Note: Doc team updates the current version and the two previous versions (n-2). For earlier versions, we will address only high-priority, customer-reported issues for releases in support.

Prerequisite: Start with what we have

in the current versions of the addon documentation, https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.9/html-single/add-ons/index#configure-nodeselector-tolerations-addons we have as part of the description of where to specify the nodeselector and tolerations "a certain namespace on the hub cluster".  that is not detailed enough.

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

Provide info for the following steps:

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

affects 2.9, 2.10, 2.8

2. - [X] Mandatory Choose the type of documentation change.

      - [ ] New topic in an existing section or new section
      - [X] Update to an existing topic

3. - [ ] Mandatory for GA content:
            
       - [ ] Add steps and/or other important conceptual information here: 
       
            
       - [ ] Add Required access level for the user to complete the task here:
       

       - [ ] Add verification at the end of the task, how does the user verify success (a command to run or a result to see?)
     
     
       - [ ] Add link to dev story here:

4. - [X] Mandatory for bugs: What is the diff? Clearly define what the problem is, what the change is, and link to the current documentation:

we need to specify more precisely the namespace to select. I think here this should be "the namespace used for your acm installation".