What does it mean to use one form, dynamically changing the properties of an ES?

Question

C++ / C#

Hello, tell me please, I don’t quite understand the task for the laboratory, and specifically this sentence, I highlighted it in bold:

Develop an application with a MenuStrip control. The main menu should include the following items and sub-items:

Implement all actions with arrays specified in the menu. To sort an array and search for an element, use the methods of the ArrayList class. To manipulate the contents of an array, it is mandatory to use a two-way relationship with the DataGridView. To implement the execution of the Create, View and Edit commands, use one form, dynamically changing the properties of the EC.
In the Work menu item, add the Task execution command and implement the task execution in accordance with the option.

Please tell me what is the properties of the EU, thank you in advance for the answer.