House plan system for the webpage

PLEASE READ IT VERY - EXACT 1. The visitor choose a house plan. The plan has four different positions 2. After selecting a position, visitor will be directed to the house plan platform 3. On the platform, the visitor can make the following changes to the plan: 3.1. Windows and doors can be moved, deleted and added 3.2. Internal walls can be moved, extended, sortened, deleted and added 3.3. The dimensions of the external walls are fixed and can not be changed 4. When the plan is completed, the plan is saved and sent to the visitor's email. A copy will be sent to us 5. In the email, you can see the plan of the house made 6. A visitor can create a user 6.1. The user can view, edit and delete a saved plan -