Hi,
If you take a look at the Corporate Site example template, you can see a working example of how to configure the paging in search results.
Under Examples -> Web Parts -> Full-text search, take a look at the Smart search results document. As you can see there, there are a number of options for pager settings and pager transformations.
Within that site template, there are appropriate transformations included, each beginning "CMS.PagerTransformations".
For detailed documentation about UniPager control, I'd recommend to check our
Controls referenceRegards,
Zdenek