You can model a lightweight team task planner in MDriven Designer with projects, tasks, members, progress tracking, and automated business logic.

What you will build

The planner includes projects, tasks, and members. It supports creating projects, managing team members, adding tasks, tracking tasks, calculating project progress automatically, and enforcing validation rules.

Step 1: Create the domain model

Create the core classes needed for the planner.

Add associations so that:

• A Project has many Task objects.

Step 2: Add attributes

Add the following attributes.

Class	Attribute	Type
Project	Name	String
Project	Deadline	Date
Member	Name	String
Member	Email	String

Step 3: Add derived task counts with OCL

Add derived attributes to Project to calculate task counts.

Total tasks

Create a derived attribute named TotalTasks:

self.tasks->size

The source then introduces calculating overall project progress, but the supplied text does not include the expression or remaining steps.