Banners & Links Formats
The basic configuration for banners you can set in Configuration > Banners & Links Formats
More about banners formats you can find here: https://support.qualityunit.com/957032-Banners--Links-Formats
When you create or edit a banner, there is a possibility to define a SEO string parameter.
More about SEO string you can find here: https://support.qualityunit.com/226918-What-is-SEO-string-for-when-creating-or-editing-a-text-link-banner
More about how to use target attribute from banner in banner format you can read here: https://support.qualityunit.com/469422-How-to-make-my-banner-to-open-the-new-window-target-attribute