The steps that need to be followed if you need to Change the Fuel Rate.

•  Click on Setup Circle

•  Click On  Travel and Expense

Go to Claim Rule Builder

•  Select the Claim type and respective subtypes

• Drag and Drop Fuel Rate field in Field configuration section of Claim Rule Builder

•  Edit the Fuel Rate field, Input the fuel rate that needs to be configured

• save - > final submit the field configuration 
  
  
• To map the fuel rate against respective travel mode, request you to follow the below