I created a matrix, including two lists (tasks list and the built in users list) as dimensions and a boolean formatted line item in order to set write access for an other line item through the Write Access Driver. That part works, no issue with it.
But I want to list (concatenate) in a simple text formatted line item all the users who have been previously marked (through the booleans described above). Is there a way to this? So, as an output I'd like to see my tasks list and a line item including all the users.
The purpose is that every task in the tasks list might have several users with write access, and I want to list all users in one field who will have write access for each given task in the list.