I have a layout containing 4 small charts, fitting on one monitor. I use this layout to view groups of 4 stocks that are related to one another. Using the layout in this way, I can see all 4 related stock charts at one time.

I have developed a series of 4-stock group symbol lists to use in this visual analysis.

I often need to switch from viewing one 4-stock group to another. Right now I am just manually typing in one new stock symbol for each of the 4 individual charts to complete switching the view to the next group of stocks.

Is there a way to update all 4 charts, each chart displaying its own unique new symbol, all at one time? I don't see a way that a watchlist does this, the WLists seem to do only one item at a time. Thanks.

Rather that a Watchlist, try setting each group of 4 as multiple Tabs in separate layout.  You can quickty move through multiple  tabs, add, detete etc.  Make sure the "Not Linked" color option if you do not want the charts to change.   Good luck.