1.Go to your activity that has depreciable asset. For e.g. if it is rental property, go to
  1. Activity Information
  2. Rental Real Estate
  3. Name of property
  4. Depreciation and Amortization
  5. Asset Detail
  6. Columnar Depreciation Entry
  7. Identify the 754 asset
  8. Double Click on the drill down arrow on the 754 asset


2.
You will be on the 754 asset detail worksheet
3.
Scroll down to Specially Allocated Depreciation
4.
Choose second option; you can also allocate 754 depreciation here