Algolia Scout Search in multiple indices in single API call

How can I search Algolia using Laravel/Scout in multiple indices in single API call using multiple queries pushed in single client request as mentioned here ? : https://stackoverflow.com/questions/49846344/algolia-searching-multiple-indices-in-laravel

and also deal with pagination ? How can I access Algolia client via Scout and create queries with pagination and push to search call ?

I am using Laravel 5.4