Which scheduled process updates an employee's username

Summary:

We are updating new hires username using an HSDL. The username gets updated later in the day for us but I can't figure out which schedule process (or processes) helps reflect the change on the front end. I would like to do a manual run if needed.

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

23C (11.13.23.07.0)

Code Snippet (add any code snippets that support your topic, if applicable):