As far as the next time you want to do this, you can simply click "duplicate category", then save and exit.
Then, go to the select button at the bottom right, and search for "copy of stream clean up" in the search bar. When you locate it, click the box next to it.
What will happen is that it will add the copy to your category into the catalog and now all you need to do is change the dates and times, or any editing you need to do.
For further information on going further in the duplication process to make your page look great in minutes here.