Hello Nooris, I hope all is well on your end!
I’m not sure if you have already figured out a solution to what you’re trying to achieve, but just thought I’ll share just in case you’re still trying to figure out.
You’re definitely on the right path…
Each respective Chart also has its own setting. So to achieve this on each individual chart, Right Click on an empty area of each chart and go to Settings for that specific Chart and you can make the changes there.
I’m not at my trading desk now so I’m just including a screenshot of MW Mobile App on my iPhone which is kind of similar in a way.
I hope this somehow helps.
Best