No problem.
In the Join table make a formula text field called [Organization Name or Acronym] with a formula of
IF(Trim([Acronym])<>"", [Acronym],[ Organization Name])
The reason for the Trim is in case someone has entered an Acronym with just a few spaces. Then, in each of your 5 reverse relationships lookup that field into your Parent table and concatenate them all together.
There is a master list of all the Formula functions here.
https://login.quickbase.com/db/6ewwzuuj?a=q&qid=1000132That would be a good bookmark to save in your favorites as it has examples for each function.
There may also be a general video in the video education resources at Quick Base university.
https://university.quickbase.com/This is probably a good course here
https://university.quickbase.com/series/advanced-training/advanced-use-of-formulas
