To export a selection of nominal transactions, you can use the All Transaction report and export this to a .csv file, which Excel can use to display the results in a suitable format.
Please follow the below to generate the report and how to export it to this filetype:
Click on the tab Financials
Under the Reports section, click Transactions
Then choose the report All Transactions
Amend the search parameters as needed
Make sure the output is set to File, rather than the default of to Screen
Then click the Green Tick to run the search
If you haven't entered any parameters, it will ask you to if you want to Ignore Search. Click OK
On the Output screen that appears, change the type from Delimited (tabs) to Delimited (commas).
This will then change the filetype to .csv, to which you can rename the file name.
Click the Green tick to generate the file, checking the location it will save the file to
Once generated, go to the location mentioned previously to open your .csv file in Excel