Easy peasy. Plug your Orba in to your audio interface, In Studio One go to Options ---> External Devices ---> Add new device ---> Select New Keyboard ---> Select Orba from the Receive From drop down box (it should appear) ----> enable MPE ---> name the device whatever you like and you;re good to go. Load in an Instrument (hopefully an mpe one if you are using Studio One vs5) and play/record away. The procedure may vary slightly based on which version of S1 you are using.
Mrljwalsh