Use the re-entrant Layout Wizard BACK | 1 2 3 4 5 6 7 8 | NEXT | MAIN
To remove OFFICE.REGION_ID (and its prompt) from the layout:
  1. In the Object Navigator (under the Canvases node), select the frame where the OFFICE block's items are placed.
  2. Re-enter the Layout Wizard
    on the Data Block page, select REGION_ID on the right side of the item picker.
  3. Click < to move it to the left side of the item picker.
  4. Click Finish.