1. Calculations/Expression building
   
2. Validation
   
3. Data transformation (XML → JSON)
   
4. Business logic execution
   
5. Database queries
   
6. Filtering or sorting
   

Processing Section

1. This section explains the data that the system uses to transform the input.
   
2. The section provides the following tabs:
   
1. Details
   
2. Configuration
   
3. Design
   
4. Processed
3. By default, the Details tab will open. However, you can switch between the tabs by clicking on them.
   
4. Each section is explained in detail in the following sections of this article.

Details Tab

1. By default, the Details tab is shown on the Processing tab. However, if you are on any other tab, click on the Details tab. The section displays the following fields:
1. Name:
   
1. It provides the name of the processing unit.
   
2. You can modify the unit name in this field. Click on the field, and modify the name of the unit.
   
3. Once you are done with the modification, click on the Save button provided in the action area of the screen.
2. Description:
   
1. It describes the processing unit.
   
2. You can modify the unit's description in this field. Click the field and change the unit's description.
   
3. Once you are done with the modification, click on the Save button provided in the action area of the screen.

Configuration Tab

1. Click the Configuration tab; it becomes active and displays configuration details.
   
2. The configuration details may vary from unit to unit. Based on the selected unit, the configurational information will be provided on the screen.
   
3. You are allowed to modify any configuration values in any field. The fields could be drop-downs, text boxes, toggle switches, etc.

Design Tab

1. Click on the Design tab; it becomes active and displays design details.

1. The Storage field lists the XSLT storage location where the files have been stored.
2. Click on the drop-down to view the storage location.
   
3. You can define any other storage location for the XSLT. You can add multiple design documents to that storage location. 

1. The XSL Stylesheet field lists the currently used XSLT, which will be displayed in the drop-down.
2. You can choose any other XSLT to use as a design. Additionally, you can add another design document.
   

Add New Design

1. Click the Add button for another XSLT in the list.
   

1. After clicking the Add button, a pop-up will appear.
   
2. Enter the name in the name field, and click the Add button.

1. Once the stylesheet is added, it will be displayed.
   
2. Please note that the stylesheet will have the basic XML structure. You can now add any design to the sheet. 

Variable Section

1. Click on the Variable tab.
   
2. TBD

Run Unit and View Output

1. The Run button is provided in the header. This allows you to run the selected unit individually and view its output data in the Output section.
   
2. You can modify its configurations and run the process to view the output. 
   
3. Click on the Run button.

1. The unit processes input data and produces output. 
   
2. This allows you to adjust the input for the desired output. Using this option, you can control the production of each process unit.