In the Customer Segment list, check the box next to the name of the customer segmentDetermines the target audience (such as "users from Los Angeles") for a promotion. Within a campaign, promotions are applied to whatever customer segments are associated with the same campaign. Members of the customer segments are defined in static groups, or you can use the Expressions Engine to create a dynamic group whenever you run a promotions. You can create an expression that includes customers whose home city is Los Angeles so that when a LA user registers on the site, the user becomes part of the target customer segment.(s) and then select More Actions > Delete Selected. Click OK to confirm.