Hello,
Thanks for reaching out to us. You can create a custom model for it with at lease 5 documents as the same model you want to analyze.
Using Labeling Tool: https://learn.microsoft.com/en-us/azure/applied-ai-services/form-recognizer/label-tool
Using new Form Recognizer Studio: https://learn.microsoft.com/en-us/azure/applied-ai-services/form-recognizer/quickstarts/try-v3-form-recognizer-studio#custom-model-basics
Please have a try and let me know if you have any question.
Regards,
Yutong