You can use in the Document Properties / Tab Opening / and check "Initial data reduction based on section access".
Configure your section access with custumer A and B.
USER ID: DEVELOPER / PW: 123
USER ID: A / PW: A
USER ID: B / PW: B
example.qvw 118.0 K
If your requirement is seperate folders, I would say that you are going to need to create two tasks. Each task should reduce on each customer and point it to a given folder. Not optimal if you have alot of customers.
We put all our customers into one folder on the accesspoint and then set up customer groups to control access to thier individual files.
What i did is, i created an excel, depends on your complexity, basically u will need 2 columns, one column has the value that will link to your main data schema so it will limit based on those values for you and second column is your customers.
assuming you are on v9, goto QVEM, in REDUCE tab, you will pick first column for "Loop and Reduce" and in DISTRIBUTE tab, u will select second comlumn for "Field containing recipient information:".
when the job runs, it will generate different files, depending on the number of customers you have.
We thought of using section access, but it requires user to use pwd.
Hope this helps..