[Detailed explanation]

This system is an integrated management platform aimed at streamlining and improving the quality of on-site management operations. The main functions and features are explained in detail below.

■ System infrastructure and authority management

1. Access management
- Easy login via LINE or email
- New users must apply and will be activated after approval
- Appropriate access control with inactive settings such as when leaving the company

2. Authority system
- Progress management authority: Separate the scope of viewing by customers and internally
- Chat authority: Individual control of participation authority for customers and partner companies
- Master management authority: Setting authority for templates, users, groups, etc.
- On-site management authority: operational authority such as deleting checklists and setting accounts

3. Master management function
- User master: Centralized management of employee information and privileges
- Group master: Definition of organizational structure
- Company master: Manage business partner information
- Camera Master: Set up and manage surveillance cameras

■ On-site management/progress management

1. Task management system
- Standardization with templates:
* Staged task definition
* Control work order by setting preconditions
* Automatic status update upon completion

- Checklist feature:
* Association with parent task
* Execution control based on preconditions
* File attachment function (optional/required selection)
* Notification settings for customers

2. Progress management function
- Status management:
* Process management from preparation before construction to construction to completion
* Automatic status updates upon task completion
* Management of work stoppage period due to work stoppage application

- Monitoring functions:
* Real-time camera monitoring
* Video recording during construction period
* Information sharing with related parties

■ Communication infrastructure

1. Chat system
- Purposeful chat rooms:
* For customers: Sharing progress reports and confirmation items
* For partner companies: Communication of work instructions and coordination matters
* For employees: Sharing and collaboration of internal information

- Feature details:
* Reliable information transmission using mention function
* Image upload/batch download
* Bulk download of comment history
* Mention between members of the field

2. Notification system
- LINE cooperation:
* Automatic notification to customers
* Report on completion of checklist
* Push notifications for important matters

- Alert function:
* Task deadline notifications
* Notification of receiving mentions
* Bulk read function

■ Document/file management

1. Attachment management
- Centralized management of estimates and drawings
- Preservation of photos and evidence materials
- Control file viewing permissions

2. Data export
- Bulk download of photos
- Output comment history
- Saving and sharing various records

■ System features and benefits

1. Improve operational efficiency
- Standardization of work using templates
- Quality control using checklists
- Improving the efficiency of information transmission through automatic notifications

2. Risk management
- Information access control through permission settings
- Ensure quality by controlling work order
- Trail management by preserving records

3. Improve communication
- Smooth information sharing between related parties
- Real-time progress confirmation
- On-site monitoring using surveillance cameras

4. Improve customer satisfaction
- Progress visualization
- Timely information provision
- Ensuring record transparency

This system comprehensively solves various issues in on-site management, improving operational efficiency and strengthening quality control. It helps optimize on-site management by standardizing work through template functions, appropriate information access control through authority management, and smooth information sharing through communication functions.