Before you begin this tutorial, please make sure you have already created a GeoProximity rule.
1. Navigate to Domains
2. Select Your Domain
3. Enable GeoIP Services
Make sure you have enabled GeoIP services. You can do so by clicking on the Advanced Settings button. Select Enable GeoIP Services from the drop-down menu. 
4. Select Record and Edit
Check the box next to the record you want to edit and then click the 
icon.
5. Select Geo Proximity Rule
Please note: If you have any GeoFilters enabled for this record, you will not be able to add a GeoProximity rule. To add your GeoProximity rule, click the drop-down menu in the GeoProximity section and select the rule you want to apply. Click Save and Close and don’t forget to commit your changes. 