Fusion Benefits Post Election Formula for Benefit Option (Employee,Spouse and Childern)

Summary

Employee select Employee, Spouse and Children's option in Benefit Plan then post Election Formula needs to trigger

Content

We have a requirement in Fusion Benefits like if Employee selects the Employee, Spouse, and Children option in Benefit Plan then if he selects only one dependent like Spouse or Child then the formula needs to trigger to must Select 1 Spouse and 1 Child Minimum.

Any One Can please share Basic Formula for this Scenario