How to calculate depreciation for Low value asset pool with two depreciation rates

Summary:

In Australia, for assets costing between $500 and $1000, the depreciation is calculated based on the pooled value of the group asset. Depreciation Rate is calculated at 18.75% on the year of addition and then 37.5% on years after.

How should I define the depreciation method? what should be the Depreciation basis rule so that the depreciation is calculated yearly?

Also, how we can make sure the depreciation is calculated at pool (group) level but the member assets also carry the depreciation calculated for the yearly periods? Do we need to define yearly calendar for this scenario?

I defined half-yearly prorate:

But the Group asset didn't pick the prorate date as 1/1/2025 as per prorate calendar: