budget-date-column.js

function onEdit(e) {
  try {
    if(e) {
      var range = e.range;
      var column = range.getColumn();
      var row = range.getRow();
      Logger.log(row)
      if (column == 2) {
        var sheet = range.getSheet();
        var now = new Date();
        var formattedDate = Utilities.formatDate(now, sheet.getParent().getSpreadsheetTimeZone(), "yyyy-MM-dd hh:mm:ss a");
        sheet.getRange(row, 1).setValue(formattedDate);
      }
    }
  } catch (error) {
    Logger.log(error);
  }
}

code block you can use in google docs Apps script section whenever you want to update one column on update of second column

https://youtu.be/EGD0jcKRGj0