Getting started
From Create an ad space, pick a standard size (or a custom one), set a price per day, and choose how many advertisers can share the slot at once.
Size can't be changed after you create the space — advertisers build their creative to fit it, so changing it later would break anything already running. Everything else (name, price, max advertisers, auto-accept) can be edited anytime from the space's manage page.
You don't need to connect Stripe to create a space or review ads — only to let advertisers actually pay.