MACRS Prorate Convention for Tax Book

Hi

We are in the process of implementing FA TAX Books using MACRS Half year prorate convention

We are going to use the seeded MACRS HY convention

Currently , our Corp book has been setup with Monthly Depreciation & Projection Calendar

Questions

1. In order to use Half year convention , do we need to change our Prorate Calendar  so that it becomes semi-annual i.e 2 periods per year  or Can we use the same Monthly calendar with 12 periods per year

2.  Also , when setting up half year prorate convention , what is the difference between the below 2 examples & what would be the impact

Example 1

From date       To date                 Prorate date