Final answer:
The correct section to create a custom tab on the lead record is typically Field Management in a CRM system's Admin panel. This section allows admins to manage various fields and customize how data is displayed within records. Other options provided do not relate to this functionality.
Step-by-step explanation:
The ability to create a custom tab on the lead record in an Admin panel is specifically related to the customization and configuration settings within a Customer Relationship Management (CRM) system or a similar platform. Given the options, the correct section where you can create a custom tab for the lead record is typically found in Field Management.
Field Management is the section where admins can manage different fields (such as tabs, sections, individual data fields) within the records of the CRM. This includes customizing how data is displayed and what data is tracked within the lead record. On the contrary, the options Smart Campaign, Treasure Chest, and Sales Insight are generally not associated with field or tab creation. Smart Campaigns are usually for marketing automation workflows, Treasure Chest is not a standard term used in CRM systems, and Sales Insight pertains to the analysis and reporting tools for the sales data, which do not include configuration settings for fields or tabs.