Investors & landlords

So I am using TurboTax Home & Business CD. When setting up the property it asks me for the rental percentage. In this case it would be 50%. In the expense section it said to put the full amount (insurance, property tax, etc) and that turbotax would automatically split the cost by this %. But when setting up the cost basis for depreciation it told me "since you're only renting out a portion of this property you shouldn't enter the full amount of this asset. Instead you need to multiply the full amount of this asset, Instead you need to multiply the full amount of this asset by your rental percentage to find ou the cost you should enter for this asset." Just want to make sure. Thanks again