Custom Entity Tagging Using BERT: How to Label Specific Terms?

I’ve been looking into using BERT for entity recognition. I’ve gone through the documentation and most examples focus on labeling generic entities like ‘Person’ or ‘Location.’ My project requires tagging specific custom entities, such as brands.

Could someone outline the key steps or techniques to adapt BERT for custom entity tagging? Is there a way to configure the model to recognize and label these custom entities effectively?

Thanks in advance for your help!