How to create correlative pages

Hi, my homepage has shown up many of sub-pages. Set the upper page of sub-page as homepage.
For example,I have 20 sub-pages show up on my homepage.
How to set only 10 sub-pages show up on the first homepage, and the other 10 sub-pages show up on the second homepage. The first homepage can set the pagination with the second homepage. Let the two homepages are correlative.
My WordPress Theme is flatsome. I only see post has correlative feature.
I also can’t have plugin to fulfill correlative page feature and limit number of sub-page in one homepage.