Hi @altros,
I hope you are well today and thank you for your question.
You can achieve this by developing custom code similar to the solution posted in the following reply.
https://colorlibsupport.com/t/slider-for-pages/#post-33351
https://colorlibsupport.com/t/using-pages-rather-than-posts-for-flexslider/
Best Regards,
Movin