A Decision Matrix, an Application Form, and an Expression Set are three components that can be configured to define applicants' eligibility and help with application prioritization. A Decision Matrix is a component of Business Rules Engine (BRE) that can evaluate answers based on rules and conditions and provide a decision outcome and explanation. An Application Form is a component of OmniScript Designer that can create guided digital forms that can capture answers from applicants and provide recommendations based on business logic.
An Expression Set is a component of BRE that can define expressions that can be reused across multiple rules or matrices.
Reference:https://trailhead.salesforce.com/content/learn/modules/public-sector-solutions-design/create-guided-di

To automatically read the constituent's date of birth from a scanned document and map it to a field in the Application record using the Intelligent Form Reader (IFR) in Salesforce Public Sector Solutions, the following steps should be configured:
Enable Intelligent Form Reader:
Navigate to Setup and search for Intelligent Form Reader.
Enable the Intelligent Form Reader, which allows the system to process and interpret scanned documents.
Enable OCR Setting in the Document:
Ensure that OCR (Optical Character Recognition) settings are enabled for the documents. This allows the system to recognize and extract text from scanned images.
OCR settings can typically be configured within the document management settings or within the IFR configuration settings.
Set Up Data Extraction:
Configure the data extraction rules to specify which data fields need to be extracted from the scanned documents. This involves setting up the templates and rules for extracting specific information such as the date of birth.
Define the mapping rules to map the extracted data to the corresponding fields in the Application record.
By following these steps, the governance agency can automate the extraction and mapping of constituent data from scanned documents, ensuring accurate and efficient data entry into the system.
Reference:
Salesforce Help: Intelligent Form Reader
Salesforce Help: OCR Settings
Salesforce Public Sector Solutions Documentation

Decision Matrices are Business Rules Engine tools that are used to automatically map and set the fees for each application. A Decision Matrix can evaluate answers based on rules and conditions and provide a decision outcome and explanation. For example, a Decision Matrix can determine the fee amount based on the type of license, the city & county location, the volume of current business, and the size of the building.
Reference: https://help.salesforce.com/s/articleView?id=psc_admin_setup_decision_matrix.
htm&type=5&language=en_US

For Bobahaven to implement Salesforce Public Sector Solutions for licenses and permits while minimizing customization and leveraging existing components, the best approach is to create a new digital experience specifically for applications. Here's why:
New Digital Experience:
Creating a new digital experience tailored for licenses and permits ensures that the specific needs of this functionality are met without interfering with the existing self-service site.
This allows for a focused and optimized user experience.
Licenses and Permits Expression:
Utilizing the Licenses and Permits Expression simplifies the implementation as it is designed specifically for these processes, reducing the need for extensive customization.
OmniScripts and FlexCards:
Deploying OmniScripts and FlexCards within the new experience site ensures a seamless and interactive user interface. These tools are designed to handle complex workflows and data displays efficiently.
OmniScripts can guide users through the application process step-by-step, while FlexCards provide quick-glance information and actionable widgets.
Steps to implement this solution:
Create New Experience Site:
Go to Setup > Digital Experiences > All Sites.
Click New to create a new site and choose a template that fits the application process.
Add Components:
Use OmniStudio tools to create and configure OmniScripts and FlexCards.
Deploy these components to the new experience site.
This approach provides a structured and scalable solution, aligning with Salesforce best practices and leveraging out-of-the-box functionalities to minimize customization.
Reference:
Salesforce Help: OmniStudio Components
Salesforce Public Sector Solutions Documentation

Explanation
Adobe Sign or DocuSign are two eSignature providers that are readily available without much coding/configuration using Public Sector Solutions toolkit. Adobe Sign and DocuSign are eSignature solutions that can be integrated with Public Sector Solutions without custom coding. They can help public sector agencies to send, sign, and manage contracts and agreements electronically. Adobe Sign and DocuSign integration can provide features such as sending a contract document for review and signatures to multiple recipients, tracking the signed contract document and updating the contract record status in Salesforce, and automatically invalidating a contract document that is pending signatures if a new contract document supersedes it using Adobe Sign Web Forms or DocuSign PowerForms. Reference:
https://help.salesforce.com/s/articleView?id=psc_admin_setup_adobe_sign.htm&type=5&language=en_UShttps