1. You can create a format as per your business requirement, similar to "Date" control rule. And refer this format in your paragraph rule by clicking the magnifying icon and referring your custom created Format.
2. As per my understanding of your use-case, you want this to appear for APAC region. You can customise how the screen appears by selecting and configuring locale of the operator.
Hope it gives you the high-level idea. I don't have readily available code for your format, though once I get I'll keep you posted.