Here is a screenshot provide by Don at Wolfpack Trading. This shows a volume imbalance Footprint chart with the Volume Price Statistic indicator added to the chart and setup to draw a red box around the POC which is the high volume price for each bar. This is a fantastic and simple way to use price and volume concepts to find trading levels while day trading.
The POC levels are dynamic as the current bar builds but are then locked in time when the bar ends and a new one begins. Past POC levels can then be referenced for possible future trades.