Hi,

Can you tell me more about this? I'm not clear about what do you mean. If you mean create an ads with a close button - it based on the ads provider, it's not the thing controlled by the theme.

If you mean about create in-feed ads, you can check options for infeed-ads for homepage via Customize > Homepage > General > IN-FEED ADS.

And options for Infeed-ads for Category, Tags, Search, Archive Pages via Customize > General > Category, Tags, Search, Archive Pages > IN-FEED ADS.

Best Regards,

PenciDesign