Please refer to my previous article to learn more about SharePoint Designer 2013 Workflows.

In this blog you will see how to use “Set Time Portion of Date/Time Field” action in SharePoint Designer 2013.

Description:

Creates a timestamp, and stores the output value in a variable. You can set the time in hours and minutes and add a current date, specific date, or lookup.

In this example, I have a custom list named “Custom” in which I have attached this workflow. When I run a workflow for an item it sets the time in hours & minutes and stores the output as text in the current item “Notes” field.

Workflow Design:

Result: