It seems this is not possible at the moment as you said. I could find a improvement request for showing nested groups which seems similar to the functionality you'd like here: https://jira.atlassian.com/browse/CONF-30285
I recommend to vote, watch and ask other users to vote on it as well in order to increase the chances of being implemented in a newer version of confluence.
For more details on improvement requests and bug for this macro, you can check here. Unfortunately I couldn't find an workaround in my search. I believe the best is to wait for the new feature to be implemented.
Hi team, I’m Avinoam, a product manager on Confluence Cloud, and today I’m really excited to let the Community know that all customers can now try out the new editing experience and see some of the ...
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