cannot find where to enter depreciation for my rental property and I've followed all the ai instructions.

When you review your rental property entries, you will see a section for Assets/Depreciation. That is where you can enter your depreciation for your rental property and furnishings:

On your Rental Summary screen, click on the start/update button for Assets/Depreciation. 

There will be a series of screens for you to answer questions concerning your assets. 

When you land on the screen Describe this Asset - select Rental Real Estate Property and Continue. 

On the following screen select Residential Rental Real Estate

The next screen asks about a description, cost, cost of land, date purchased or acquired.

The following screen asks some more question to include the date you put this asset into service/using it for business.

You have now added the rental property as an asset and it is being depreciated over 27.5 years.