Distribution schedules vary by deal and are typically either monthly or quarterly. (investorjunkie.com)
You must generally begin taking distributions after reaching age 70 1/2, either as a lump sum or on a required minimum distribution schedule based on your life expectancy. (ufcu.pfyfn.com)
You can elect to withdraw the assets as a lump sum and be taxed on the entire value of the fund or you can set up a minimum distribution schedule based on your life expectancy. (ufcu.pfyfn.com)