The Client (trader) wants to see the
highlight (on the right side) on the BID value.
Today, he sees the highlight on the middle Bid-Ask (see attached graph)
What is the way to change
I've been told that this is something possible in MT4 (highlight the BID value on the graphs)
What the broker said ?
You can't change that, data are provided by your broker, so ask them why.
Probably your broker plots the charts with Last Prices, instead of Bid Prices. Try to enable "Last" column in Market Watch (as I show in the picture) and check it.
The question is about MT4.
There is no Last price with MT4, at least it should not.