I need to Pair my Old Philips Hue lamp with my new HA, how do I re-pair

I currently have a Pi3 running HA & deConz for my ZigBee devices.

I cant seem to find away to do a factory reset on my Philips Hue White Lamp, lots of lamps alow you to cycle the mains 3 times etc to enter paring mode.

How do I re-pair the lamp for my New Pi4 now with a SonOff Zigbee dongle & ZHA

Regards Dave

There are 5 ways listed here Philips 433714 control via MQTT | Zigbee2MQTT