Fields specific to Employees include the Attributes section and Territories. 

 
Attributes is a custom data section specific to Employees. The types of data this section can store includes:

• Education Levels
• Professional Certifications
• Technical Proficiency levels

Sales Territories is a setting found under Preferences within Employees. Whether you use Zip Codes or geographical territories for your sales force. They can be entered in based on the system that your company uses. Within the Preferences section for each of your Employees you can enter the respective territory for each of your sales people.