One can transition a schefflera from indirect light/shade to full sun by increasing the exposure to full sun an hour or so every week or two. Just start with early morning sun. Otherwise, I can assure you, the leaves will not only sunburn but drop like crazy. This sun-acclimation takes a lot of time and effort though. If you have a "leggy" plant, trim the heck out of it. New branches will grow from the cut branches and you can root the cuttings if you wish. That's the only way I know to not only keep the size of the plant in check but also to get a bushier plant. Ken