Report

It is possible but requires a lot of coding.

Look at CHANGECOMPANY function on a rec variable - it enables yout to switch company on a record. But its scope is limited - it only changes company in the record var on which it is called. It means that you would need to change company on every single record var used on your report, and each time after a record var is cleared (CLEAR(RecVar)) or reset (RecVar.RESET);

You report structure needs to look like this

DataItem Company
  DataItem [Your header table]
      DataItem  [Your details table]

And the in Company - OnAfterGetRecord:

[Your header table].CHANGECOMPANY(Company.Name);
  [Your details table].CHANGECOMPANY(Company.Name);
  [Your global table var 1].CHANGECOMPANY(Company.Name);
  [Your global table var 2].CHANGECOMPANY(Company.Name);
  //...and so on

On the top of this in every single place in he report where you use a local rec var, or have a call to RESET/CLEAR on a local or global rec var you also need to add "your var".CHANGECOMPANY(Company.Name); statement