Normally to get your DJI OSMO up high, people are attaching the entire unit to the end of an extension pole. Completely functional but it does position all of your joystick controls away from the operator and adds more weight to the end of your pole.
Kamerar has a different approach and has designed a simple but useful Extension Adapter to quickly get those shots up high, down low, and would allow you to mimic those sweeping jib shots with ease. Here's a quick overview video of the DJI OSMO Extender by Kamerar.
Again, the benefit to this adapter for your DJI OSMO is having all of the native controls in the palm of your hand, and less weight to manage at the end of your extension. The Kamerar Extender Adapter for the DJI OSMO starts shipping in a few weeks, pre-orders available now (click here).