WordPress.org

1. Upload multisite-latest-posts-widget folder to /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress
3. Assign this widget to your theme's sidebar under Widgets menu
4. Set the title and number of posts (default limit is 5)

If you would like the latest posts to be shown in content area you could use below short code.

[mslp limit=10 style=list]

You can assign two styles 1. style=list 2. style=div

Note: default limit = 5 default style = list