Lacerte has this snifty feature:
Go to where you expect the info/amount to appear. Right click on that field, then click on "jump to input". That will *usually* take you to where you to input the info (or give you the various options when there are multiple places).

If you enter the 1099-DIV details on Screen 10, as you normally do, you will notice that the input screen mimics the order of those boxes on 1099-DIV.  The input screen even has each line item indicate the corresponding Box # on 1099-DIV.  For example, the line for 199A dividends is Section 199A dividends (5).