Salesforce query: Updating all Child Fields when there's a field change in Parent?

Hi Manpreet,

You can do this by using Process Builder.

• Create a new Process Builder and In "The process starts when" choose "A Record Changes".
• Add the Object and enter the criteria in which your process builder will run
• Add other Required Details then
• Within Action to perform select "Select a record related to the AssistantProgress".

Hope this will Help you.