Page and Configurator Help Needed

I am attempting to Disable Default Rate and Exchange Rate and also Disable and Default Currency in the Travel and Expense module.

I am partially successful when I disable and default currency.  It looks good until I select and expense type then the field becomes editable.  When I add a second line, the field is disabled and displays USD, but as soon as I add the expense it opens up for edits.

The only item I have been truly successful with is disabling the Default Rate. 

Maybe I am not picking the correct fields???? 

QUESTION: Can you hide links from a page using page and field configurator?  i.e. trying to hide the Receipt Split link on the expense entry page (EX_SHEET_LINE).