I came to the same realization that I need to include the UK dividends in a column to raise the credit limit and offset overwithholding on the dividends of some other countries.
Here's the trouble: I use the "break the 1099-DIV into separate pieces" trick to get Form 1116 to place the countries into each column. TT online won't let you select a 1099-DIV that has zero in box 7 (which is the case for the UK fake 1099).
The workarounds I've figured out are
1) Ignore the IRS instruction that says to list every country in a column and simply group everything under Various or RIC. Given I have only US-listed listed stocks (or ADRs) coming in on one Schwab 1099-DIV, I doubt the IRS would notice or care.
2) Enter a fake $0.01 into box 7 of the UK fake 1099-DIV to make it selectable in the Form 1116 interview questions. I would probably subtract $0.01 from one of the other box 7 to balance the overall numbers with the true single Schwab 1099-DIV.
