You can edit agent's profile information in both ways: as an Admin or as an Agent.
1. Admin can change agent's information via Estatik - > Agents - > Edit on specific agent.
2. Agents can edit their data via their profiles on the front-end directly. To allow them to do that, please make sure that you created the page with the shortcode [es_profile].
All registered and active agents can log into their profile and add their own properties, save searches and properties, save agents and agencies, manage their subscriptions.