How do I add additional columns to a transaction report?

Go to Nominal Ledger

Then > Utilities > Transaction report > Setup > Transaction Reports > Select the report from the drop down, then within Displayed Columns click add.

Single click the line from the list, and add a column width (between 1 and 30)

Click OK to add

Please note that any duplicate columns may result in the transaction report not running, so also check first to ensure that the column you are adding is not already there.