How do I adjust the top and bottom margins?

We don't currently offer the ability to adjust top and bottom margins, but these are already pre-set to industry-standard sizes that are accepted on both KDP and IngramSpark. Additional options for top and bottom margins may be an option in future updates though.

How do I adjust my margins?

I've adjusted both the inner and outer margins to be the same, why do the margins still seem unequal?

KDP is asking me to increase the page size by 0.125 wide and .25 height how do I do this?

Margins for Print

How do I get an ISBN?