Are you required to allocate depreciating assets to a low-value pool?
No. The choice to use low-value pooling is yours. If you choose not to use low-value pooling, you work out the decline in value of low-cost and low-value assets as you do your other depreciating assets, that is, according to their effective life.
Once you allocate a low-cost asset to a low-value pool, you must pool all other low-cost assets you start to hold in that, and each later year. However, this rule does not apply to low-value assets. You can decide whether to allocate low-value assets to the pool on an asset-by-asset basis.
Once you have allocated an asset to the pool, it remains in the pool.