Fixed Asset Depreciation

Hi there, I would like to ask how can we change the current FA depreciation years for certain FA? I have 2 Lands, bought ages ago where both of them have difference years of depreciation, 76 and 78 years. However, during the implementation earlier on, the consultant has set the depreciation for land as 99 years for all the new land purchase, which is correct… Therefore, I would like to know if there is any other way to change the depn years for this two FA land as the depreciation figure calculated is wrong based on 99 years.

Can we change it in the table just for this 2 FA, under FA depreciation book ?