@Advertiserst 

You can accomplish this with query list and update item actions.  You could either create a list workflow on either list 1or list 2 that runs when the user updates the item, or you could create a scheduled site workflow that will run on list 3.  But either way, you would query the related items in lists 1 and 2 and update the related item in List 3.  You just need to make sure that you have a way to identify the correct items in all the lists.

Beyond this, not knowing how you have your lists designed, I can't give any more details about how to design the workflow.  If you want more information, please share your list configurations and related fields, what needs to be updated, what is the link between the 3 lists, etc.

Hello I have attached the list pictures.

the one with two images are the master data to be updated from quality management summary and productivity report.

please assist me 

If I post my email here it is on public display for the world.  Below every post, there is a drag and drop files here window.  This works very well.  Check that you are not exceeding the 5MB limitation. 

Apologies 

I have attached it now 

Sorry, not what I was after.  Please screenshot your list settings columns section for each of these lists, so I can see all the fields and their data types.  Example attached.

Also, please explain:

How do items get created in these 3 lists?

Which one does your user populate, and with what data?

What is the common property, or combination of properties for tying records between the 3 tables.  IE. staff name, or combination of staff name + month, etc.  (maybe you can highlight these in your screenshots).

I agree that direct interface via email or phone would be simpler, but I cannot find any way to initiate a private contact through this forum, or through user profiles.