1. From the management settings for the appropriate object, go to Search Layouts.
2. Click Edit next to the layout you want to customize: search results, lookup dialogs, recent records lists on tab home pages in Salesforce Classic, lookup phone dialogs, list views, and search filter fields.Note In Lightning Experience, use SearchResults to change which fields appear in the search results for global search, lookup search, and search results filters, if available for the object. You aren’t required to separately update Lookup Dialogs or SearchFilter Fields.
3. For list view and search results layouts, select the standardor custom buttons you want to display. To hide a standard button onthe list view, deselect it. Standard buttons aren't available onsearch result layouts.
4. Move fields between Available Fields and Selected Fields.To customize which fields display in the layout, select one or more fields and click Add or Remove.To sort fields in the layout, select one or more fields in Selected Fields and click Up or Down.To select multiple fields individually, use CTRL+click.To select multiple fields as a group, use SHIFT+click.To customize which items display in the layout, select the item and click Add or Remove.To sort items in the layout, select the item and click Up or Down.Note When editing a search results layout for an object, you can select the Override the search result column customizations for allusers checkbox. If selected, all user column customizations within your organization are overwritten and restored to the organization-wide default settings.
5. To customize which fields display in the layout, select one or more fields and click Add or Remove.
6. To sort fields in the layout, select one or more fields in Selected Fields and click Up or Down.
7. To select multiple fields individually, use CTRL+click.
8. To select multiple fields as a group, use SHIFT+click.
9. To customize which items display in the layout, select the item and click Add or Remove.
10. To sort items in the layout, select the item and click Up or Down.
11. Click Save.