You can get it, appearing in Promotion window. You need to promote your ad following one of these two ways to do it:

POST AD (you must be registered)
When you post an ad you get the Promote ad page. There, you can promote your ad into promotional window.

OWN ADS (you must be registered)
In own ads page, on the right side of every active ad, there is the “promote ad” button. If you click on it you will access to promote page.

If you have any doubt, do not hesitate to contact us: info@moma.es | +34 973 603 660