How to configure ICP where Amount should be auto calculated based on other Input Value?

Summary:

How to configure an Individual Compensation Plan where i can pass number of family members and then it multiplies this with a Unit amount and gives "Amount" to be paid.

Content (required):

An ICP needs to be configured where based on number of Family members Allowance has to be awarded. How should the element be configured where i can pass a number (no. of members) and then it auto calculates "Amount" input value for the ICP.

For example, if 2 Members then Amount should be 5000* 2 = 10000 INR ,

if 3 members then Amount should be 5000*3 = 15000 INR.

Version (include the version you are using, if applicable): 22D/23A