Assuming this is a single voicebank with multiple subbanks controlled by OTO suffixes, there's no need to change the uar setup. Everything would stay in the same single folder as usual.
If you want to make multiple separate voicebanks, which are not used as a combined bank in UTAU, you would prepare separate UAR files for each of them.
For future questions about other topics, avoid using text generators to look for answers. Text generators ("AI") will generally make up sentences based on what words are likely to go together, which does not guarantee that any answers are factually correct.