If you want to Generate Now, or another time slot, ensure you have set a row filter on a criteria column that does not have a formula, like "qty Is Not Empty".
Warning: If you do not add a row filter G Merge will generate a document and/or email for every row indicated in the range of your formula.
2. To generate 2 separate documents based on a Google Form response use =importrange to copy responses to a 2nd spreadsheet.
You will then be able to set up a separate document template and generate 2 documents from the same Google Form.
On this 2nd spreadsheet:
1. Create a row filter on a criteria column that does have a formula: Criteria column "Is Not Empty"
2. Generate every hour or daily.