You can use Tags to keep track of and group shipments by specific parameters.
First, navigate to the Tags page under Orders > Tags from the main menu. You can manage and create new tags from the top right of the page, under the Manage Tags button:
Here, you can manage any existing tags by changing the colour and title, and can delete any tags you no longer want to use. You can also search for a specific tag from the search bar on the left. To create a new tag, enter a title and select a colour from the top of the pop-up, and then select the Create Tag button.
If you have a lot of shipments assigned to the tags you have set up, you can filter the shipments that are showing on the Tags page from the right hand side: