PenciDesign replied
Hi,
1/ We've said about this issue in the documentation for Soledad - please check it here
If you would like to adjust the amount of posts shown per page Homepage, you can go to admin > Appearance > Customize > Homepage Options > Custom Amount of Posts Shown Per Page on Homepage and change the number to value you wanted.
\If you would like to adjust the amount of posts shown per page on Archive page (category page, search page, tag page...),you can go to Settings > Reading > Blog pages show at most and change the number to the value as you desired.
2/ Unfortunately, there is no way to sort the posts to display like that... Because too much customers has 2-3 categories only and we can't display 2-3 posts only on the homepage...
I think you can check this video tutorial to know how to config homepage magazine layout - and use featured categories to listed your posts for each categories. Of course you can change number posts for display with each featured category style ( check more on the video tutorial )
Best Regards,
PenciDesign