VWAP Anchored Date with multiplier

A modified version from the default VWAP indicator with 2 major enhancements:
1- Start date: instead of being limited to applying the indicator on the entire chart, this script allows you to select the start time to show the VWAP. You can also use this option to show VWAP on an instrument starting from a specific time, all time high for example.
2- Multiplier: You can choose a period multiplier for VWAP, like 2 days, 4 month, 3 years and so on
https://www.tradingview.com/x/Agh04snM/