AR aging in query generator includind AR down payment invoices

How to add AR down payment invoice with OINV for open invoice open amount in Query Generator? How to add column total on the column header (Ctrl + F?)

How to change the Preview to landscape when query data pop-up?

I tried to export to Excel but did not save to correct path that I setup in the general setting path tab, only can save as txt file but PDF turned out fine, why? I used SAP Business One, ExclDocs. Word to WordDocs\English, Picture to Bitmap, Attachment to attachment.