You can segment your lists by using filters to limit what is displayed. To do this, just click the + button here:
You will see the Add Filter dialog where you can specify which attribute you want to filter on.
We'll choose Title for this example and we'll set it to Equals CEO:
(Note that there are number of different operators depending on the attribute type)
To apply the filter, click Create:
And you'll see the list match the filter you've created:
If you want to use this filter again, you can click the Save View button:
Then just give it a name and click Create
And you'll see that you are now in the newly created view:
You can use this dropdown to switch between saved views and to go back to showing all items.