Having Communihub generate subitems under the parent item where the activity was generated

I have a CRM with a sales pipeline. On there is a timeline that is the summary of the activities for each lead. Each activity for each lead is a subitem of the lead.
Is there a way to get monday to create a subitem under the right lead when an activity is genereated in Communihub? There should be, as they show up in the activities-board, I just can´t figure out how to route them from the activities board and create a subitem in the right place. Anyone?

What about using the Connect to Board and Mirror columns instead?

I can not see how that would solve the problem?