Manager approval emails approve reject buttons?

Hi, We are using nextgen helpdesk (HCM) and have built an object workflow that sends an email to manager if a certain request type is created. I have created an email template but how do we place approve/reject buttons in the email so it updates the status of the request dependant on whats clicked?

Version (include the version you are using, if applicable): 24A

Code Snippet (add any code snippets that support your topic, if applicable): None yet