Using multiple rows and just one column for page layout?

After creating the grid lines for the rows, you can place text frames on a master page (linked or unlinked). Add in the number of pages you wnat in the document, select all the pages in the Pages panel, go to the panel's menu, and select override all master page items. (If you have actual master items you do not want overridden, put them on a separate layer and lock that layer.)

If you want the different option for other languages, check to see if that language version is available in the Creative Cloud app (install other versions).

What do you mean by "multiple row margins"? Multiple rows? Follow the instructions provided by Nigel French.

Since you haven't told us what it is you're laying out, you might also consider creating your layout doing the Tables feature which lets you control rows and columns and text can flow with a table cell.

Choose Layout>Create Guides. Add the required number of rows fitted to either the margins or the page. So long as guides are unlocked (View>Grids & Guides) you can move the guides to wherever you want them.

You don't.

What you can do is rotate the view of the page but without knowing exactly what you're tying to accomplish, it's hard to offer much else in the way of advice.