I want to populate value in single select field when new record is created

Hi,

I have a table and form associated with it.

When ever a user fills a form a row is created in the table.

I have created a field Point of Contact(single select field)(4 no.s).

I am looking at automation or scripts which can work as when ever new record/row ois created in the table POC(out of 4 any one) is assigned cyclic for each row.

Please help in automation or script.