Approve status should change

I am creating a record and sending to two Department head for approval .
I am picking the department head with a Enumlist with reference of employee table were the key is Email ID
Department head will click the approve action button ,once he click the button i am adding his email Id and record id in the log table
Once the both the department head approve the Status column should change to Approved
Can you suggest any expression.??

Both myself and @Steve had responded to this same exact query multiple times and under multiple and exact same but differently headered posts. May I ask your intention with this consistent flooding?

Leventk, Steve told me to post this question in new post with a detailed explanation for the Status Changing ,so i started the new Question

My question is different in this cause .Before i was asking for the action button.Now i had bit confusion in Status changing to approve .