Hello. I have a TreeTable containing a list of orders (Order ID, Type, Date, Client) and so on.
For each order object, I want to have a nested list of services (Service ID, Description, Price).
What I achieved now is having a Order Editor where I can choose Order ID, Type, Date, Client and a TokenList of Services (where I can choose from 0 to multiple services).
From what I’ve read on the documentation, the TreeTable only shows entities with references to same entity, which is not my case.
In short words, I would like to have an arrow next to each Order ID, which shows me the Services for that Order ID.
I can’t seem to find anything at all regarding this problem.
I attach a screenshot of my table as of now.
Thank you so much 
