form 1040 schedule 1 line 16 worksheet

I using Turbo Tax Home and Business Windows desktop version, and I have a question about form 1040 schedule 1 line 16 worksheet data entry.  I navigate to the the following section:

-- Business 

-- Business Income and Expense

-- Continue button

-- Click "I'll choose what I work on" button

-- Self-employed Retirement screen , click (Start/Update) button

-- Self-employed Retirement Plans screen, click Yes button

-- Individual and Roth 401(k) plans screen,

   -- I entered individual 401(k) Elective Deferrals

   -- I entered Catch-up Contributions

   -- I entered Employer Matching (Profit Sharing) Contributions

   -- Click Continue button

-- Adjusting Self-Employment Income screen, click Continue button

-- Keogh, SEP, and SIMPLE Contributions screen, Select <my name> radio button, click Yes

-- Keogh, SEP, and SIMPLE Plans screen, click Continue

-- Jay's Contributions screen, click Continue

-- Your Retirement Contributions screen, click Continue

-- Retirement Contribution Allocation screen

On this screen there is the following information/prompt:

"Enter the amount or your $nn,nnn.nn Keogh, SEP, 401(k) plan contribution deduction attributable to <my business name>."

I'm prompted to enter:

"Amount of Contribution Attributed to This Business" <with a edit field to enter the value>

I'm not sure what value I should enter here, and the Turbo Tax help, community discussions, and IRS publication 535 does not help me determine the proper entry.

I think I should total amount including all the previously entered values entered before (below for reference)

-- Entered individual 401(k) Elective Deferrals

-- Entered Catch-up Contributions

-- Entered Employer Matching (Profit Sharing) Contributions

since all contributions are from my business, and there is no contributions from other sources/businesses contributing to the 401(k) since none exist.

I would appreciate your help to determine what the proper amount to enter in this screen is.

Thanks, Jay