One 1099-r for rollovers of pre-tax $ from 401k to Roth and traditional IRA's

I processed three direct rollovers of pre-tax funds from a 401k (one being a taxable conversion to a Roth IRA; and two being tax deferred rollovers to a traditional IRA).  All three rollovers are reported on one 1099-r coded "G", and only a portion of the Gross Distribution (the amount converted to the Roth IRA) is reported as taxable.  It appears TurboTax does not allow an option for reporting only part of the total as taxable, as there are only 2 permitted entries indicating either that all or none of the funds were rolled over to a Roth IRA.  How do I proceed?