How to disable reversal button in OIT timecard entry screen?

Requirement: To show Historical OIT timecards, but disallow Copy and Reverse Buttons.
Synopsis:
We are doing an Upgrade OTL and one of the requirement was to prevent users from Copying and/or Reversing any of the historical OIT timecards.

Steps:
1. Ensure the profile option - at responsibility level - "PA Time: Allow Reversals" in self service time is set to Yes.
2. Goto to AK Developer Responsibility
3. select Define Regions and search for PA_WEB_TIMECARD_HISTORY Region ID
4. Click the Region Items Buttions
5.a) For preventing Reversal: Uncheck Node Display checkbox for the attributes PA_WEB_REVERSE and PA_WEB_REVERSE_URL
5. b) For preventing Copying: Uncheck Node Display checkbox for the attributes PA_WEB_COPY and PA_WEB_COPY_URL
Save and Close.
This will remove the Copy and Reverse Buttons from OIT Screens.