The transport functionality of the 360 Plug-in Mixer and UC1 front panel is achieved using HUI/MCU commands, therefore you must configure a single HUI/MCU peripheral in your DAW to use transport controls.
You must also configure ‘Plug-in Mixer Transport’ in SSL 360° CONTROL SETUP.
Please follow the instructions on page 38 of the User Guide, which you may download from the UC1 Downloads & Documents product page on the SSL website.