Joining data from two queries in a single report when all the objects are dimensions

in my example I have 2 queries 1 is Rels and the other is Related Acc the Related Acc query is reading the account name for accounts that are the Rel Business Partner ID from the Rels Query

The result is two tables 1 of the accounts with the related accounts and the other of the related accounts IDs with their names. I want to join the second table to the first to provide name details fro the Rel Business Partner ID in the First table

The first step is to define the Merge criteria which is the Rel-Business Partner ID from the Rels query and the Business Partner ID for Filtering from the Related Acc query use Ctrl click to select these two dimensions then right click and select Merge

Next right click on the Merged dimension and select Edit Properties

Then change the name of the Merged dimension to make it obvious which is which

result is shown below

Next create a variable for the Organization name from the Related Acc query.

The important elements are to make the Qualification of the variable a detail not a  dimension. When this detail variable type is used it allows you to specify what the associated dimension is in this case it is the MErged dimension Business Partner ID M.  The Formula just reads the value of the field from the Related Acc query

finally include the new variable in the first table and the names will be displayed correctly