Hide IT0009 Bank Data Fields from ESS

Hi,

IT0009 has two data fields “Standard value” and “Standard Percentage”. These two fields are used if employee has secondary bank account and payment need be split. Only one filed can be used at one time. Since we only allow employee to use “Standard value” , I have hidden “Standard Percentage” from R3. But from ESS, employee still can see and enter percentage in “Standard Percentage” field. How to hide IT0009 data field from ESS portal ?

Regards,

Jim