Can't activate Burst mode GX9

TimJohnSpen2022

Hey, I'm a recent convert to the Lumix GX9. I want to try burst mode but it is impossible to switch it on on my camera. Pressing the (4k/timer) down button on the back as advised absolutely everywhere merely pushes me into resetting the focus area and setting again (or exiting thd setting). I have been through every menu item and I cannot change it.


I shoot raw, standard mode, on AFC/AFF using a 20mm f1.7 lens.

Somebody out there, pleaze tell me what I'm doing wrong! 

Thanks