Gantt chart

Hi ALL, 

I want below requirements satisfied with Gant chart. We are using editable grid to change dates.  In the same way want gantt chart to update dates via Gantt. 

below is needed and please suggest which plugin is best to satisfy our needs.

1. Task Structure & Organization 

• Task grouping and hierarchy 
• WBS (Work Breakdown Structure) grouping with expand/collapse 
• Predecessor relationships between tasks 
• Ability to change task dates and have downstream tasks update automatically 
• Ability to rename tasks 
• Assign task owners 

2. Scheduling & Logic 

• Support for dependency types (FS, SS, FF, SF) with duration handling 
• Auto‑lag based on dependencies 
• Manual scheduling toggle (auto vs. manual) 
• Critical path identification (on/off toggle) 
• Visibility of Planned vs. Actual vs. Standard dates 

3. Visualization & Readability 

• Color coding of tasks 
• Highlight past‑due tasks 
• Highlight at‑risk items (manual flag) 
• High‑level Gantt view for quick status review 
• Column or swim lane hierarchy aligned to WBS 
• Milestone highlighting 
• Ability to zoom levels (day / week / month / quarter / year) 

5. Resource & Capacity 

• Assign resources to tasks 

6. External / Internal Visibility 

• Separate internal vs. external baseline views  
  • Clear control over what is visible to customers 

7. Exporting & Sharing 

• Export to PDF (presentation‑ready) 
• Export to image 
• Export to Excel 
• Export configuration options:  
  • Headers vs. tasks 
  • Hide/show dates (e.g., show durations only) 
  • Formatting controls