ui select header and footer - angular-ui/ui-select GitHub Wiki
Use ui-select-header to add a header to the top of the dropdown list.
Use ui-select-footer to add a footer to the bottom of the dropdown list.
Add one, or both as a child of ui-select.
<ui-select>
<ui-select-match></ui-select-match>
<ui-select-header>Top of the list!</ui-select-header>
<ui-select-choices><ui-select-choices>
<ui-select-footer>Bottom of the list.</ui-select-footer>
</ui-select>