In other words, trim it right above where a leaf has sprouted. Trimming off the growing tip of a stem will prevent it from quickly gaining height and will promote a fuller appearance in the area you cut.  Use bypass type pruning shears, the kind of pruning shears that cut with two blades, just like scissors. Other types of shears have a tendency to crush stems, as opposed to cutting cleanly through them.   Sometimes unwanted height in a schefflera is caused by a lack of light.  The plant is basically growing up to try to find more light.  Keep this in mind when finding a suitable place for it to live. Keep in mind that you will get renewed growth at the node where you cut, so you may want to cut the plant back further than you currently desire, in anticipation of it filling in in the future.  Schefflera can really handle some aggressive pruning, so don't be afraid to give it a good haircut! Once again, use bypass type pruning shears so that you do not crush the stem. Sometimes these plants get neglected and become horribly overgrown and if you cannot figure out a way to shape the plant through gentle pruning, you can trim it all the way down.  This give your plant a fresh start and it will give you the opportunity to better control how it grows in the future. Don't worry, it will grow back with a vengeance if it is given enough light, moisture, and nutrition.  When trimming your plant back, make sure to leave 2 to 3 nodes on each stem.  This will give the plant ample spots at which to form new growth. The large pieces you have cut off your plant would make great cuttings for propagating new plants.  Place a cutting with at least two layers of leaves into moist soil for a few weeks.   This will give the cutting enough growth nodes to keep growing. Roots should sprout from the bottom of the cutting and the plant can then be repotted.

How would you rephrase that briefly using Indonesian?
Kurangi tinggi tanaman walisongo dengan memotong batang di atas tunas tumbuh. Kurangi lebar walisongo dengan memotong cabang-cabang horizontal tepat di atas tunas daun. Potonglah seluruh batang hingga 15,24 meter dari pangkal untuk memulihkan tanaman yang sudah mengering dan kurus.