They will survive with less light, but won't look quite as nice. Keep the soil moderately moist. Water thoroughly when needed but do not allow the plant to sit in water. Feed scheffs about every two or three weeks in the spring and summer with a liquid or water soluble fertilizer such as Excel Gro. Cut back to half strength in the fall and winter.
Excellent drainage is very important.
When they are young, scheffs grow very fast and may need to be repotted every 6 months. As they mature and slow down, repot them each spring. When they are very large, just carefully replace the top few inches of soil each spring. Give them an occasional gentle shower to remove the dust build up. Leafshine will help them shed the dust, just don't do it more than once a month.