JFRV, criminal record check and notarization?

Sorry if this is answered elsewhere - I’ve found lots of similar questions/answers, but not this. I’ve also looked on National Immigration agency website.

I have my police criminal record check for JFRV, ready and waiting to be sent from the UK. Does it need to be notarized by the ROC Trade Office in London? And then by MOFA?

The marriage check required Foreign Office, Taiwan Trade Office, local Taiwan court to certify translation and then MOFA. Is it the same for the criminal check?

Is there a simple checklist on forumosa or externally, that can tell me the steps to follow for JFRV?