EFF - Validation for Multiple Rows

Summary:

We are trying to accommodate the Validation of multiple Rows using EFF for an employee.
The EFF will be captured on the Assignment Details of the employee (Page - Additional Assignment Info).

Content (please ensure you mask any confidential information):

We have attached the Expected & Current Functionality screenshots in the Document (EFF Validation for Multiple Rows - CCC) for better understanding.

Example:
We have two fields (EFF) say
-> Segment Value (Drop Down List)
-> Percentage (Max 100%)

An employee can have multiple Segment Values allocated with different Percentages. In total, the Percentage allocated for an employee should be max upto 100%