Because frequencies and talkgroups change, it is best to use a maintained "base" codeplug from a reputable UK source:
Provides pre-formatted UK DMR Repeater Lists and talkgroup lists for BrandMeister, DMR+, and FreeDMR networks. 3. Customizing Your Codeplug anytone 868 codeplug uk
You must then repeat this process to create a second channel for the same repeater: Because frequencies and talkgroups change, it is best