How to enable columns based on Plan/Component eligibility ?

Summary: Need to enable worksheet columns only for eligible employees.

Content (required):

Currently in worksheet irrespective of eligibility, worksheet columns are enabled and allow user to enter the values. Certain column where fast formula is used, returning the values even for ineligible employees.

Need to restrict the columns based on eligibility of the employees. In attached image, Additional Bonus amount column is enabled for all the employees. But ideal scenario is, its should be enabled only for eligible employee's.

Version (include the version you are using, if applicable):

21D

Code Snippet (add any code snippets that support your topic, if applicable):