You can add tags to your blog posts. This means that you can have different index pages that show different posts.
Step 1. Add tag to post
After creating your post, go to the page settings on the top left corner of the page.
Go to 'Post Tags' and type in 'tag=(what your tag is). For example, to separate your posts in past and future, you can use 'tag=past' for all the posts you want to display on your past page and vise versa.
Step 2. Add tags to your blog index.
Next, go to your blog index page. Go to the sections tab of your index section, located on the top right corner.
Type the same tag into the 'Index Filter' section and Apply.
Save and Publish.
All the posts with this tag should now be displayed on that index page.