Editing Timeline

YAPL's Gantt chart allows you to edit tasks directly on the timeline through drag-and-drop interactions. This guide covers all editing capabilities available in the timeline view.

Editing Capabilities

With Professional tier, you can:

Moving Tasks

Drag to Reschedule

1. Click and hold a task bar
2. Drag horizontally to new position
3. Release to set new dates

What Happens

When you move a task:

• Start and end dates update
• Duration remains the same
• Dependent tasks may shift (if auto-schedule enabled)

Constraints

Moving may be restricted by:

• Task constraints (Must Start On, etc.)
• Dependencies to other tasks
• Parent task boundaries (for subtasks)

Resizing Tasks

Changing Duration

1. Hover over left or right edge of task bar
2. Cursor changes to resize indicator
3. Click and drag to extend or shorten
4. Release to set new duration

Left Edge

Dragging the left edge:

• Changes start date
• Adjusts duration
• End date may remain fixed

Right Edge

Dragging the right edge:

• Changes end date
• Adjusts duration
• Start date remains fixed

Duration Limits

Be aware of:

• Minimum task duration (usually 1 day)
• Dependencies that constrain dates
• Calendar working days

Creating Dependencies

Drawing Dependencies

1. Hover over source task bar
2. Look for dependency handle (circle on edge)
3. Click and drag to target task
4. Release to create link

Dependency Direction

• Drag from end of predecessor to start of successor for Finish-to-Start
• Connection points determine dependency type

Dependency Options

After creating, you may configure:

• Dependency type (FS, SS, FF, SF)
• Lag or lead time
• Constraints

Deleting Dependencies

Removing Links

1. Click on the dependency line
2. Dependency highlights
3. Press Delete key or use context menu
4. Dependency is removed

Alternative Method

1. Open task details
2. Navigate to dependencies section
3. Remove dependency from list

Editing Task Details

Quick Edit

Double-click a task bar to open:

• Task name editing
• Quick property changes
• Status update

Full Edit

For complete editing:

1. Double-click task bar
2. Click Edit Details or expand panel
3. Access all task properties

Keyboard Shortcuts

Auto-Scheduling

How It Works

When enabled, editing one task may affect others:

• Moving a predecessor shifts successors
• Respects dependency constraints
• Maintains logical sequence

Manual Mode

In manual mode:

• Tasks stay where placed
• Dependencies show but don't enforce
• Full control over dates

Switching Modes

Toggle auto-schedule in:

• Plan settings
• View options menu

Constraint Handling

Task Constraints

Tasks may have constraints that limit editing:

Constraint Indicators

Look for:

• Icons on task bars
• Color coding
• Tooltips explaining restrictions

Overriding Constraints

To edit constrained tasks:

1. Open task details
2. Remove or modify constraint
3. Make date changes
4. Re-apply constraint if needed

Editing Milestones

Moving Milestones

1. Click and drag milestone diamond
2. Move to new date
3. Release to set

Converting Tasks

• Change task to milestone by setting duration to 0
• Change milestone to task by adding duration

Editing Summary Tasks

Limitations

Summary (parent) tasks typically:

• Cannot be directly resized
• Dates determined by children
• Must edit children to change summary

Manual Summary Control

In some modes:

• Summary dates can be set manually
• May extend beyond children
• Useful for phase markers

Undo/Redo

Reverting Changes

• Undo: Ctrl+Z (Windows) / Cmd+Z (Mac)
• Redo: Ctrl+Y (Windows) / Cmd+Y (Mac)

History Limits

• Multiple levels of undo available
• History clears on page reload
• Save frequently for safety

Multi-Select Editing

Selecting Multiple Tasks

• Ctrl+Click to add to selection
• Shift+Click for range
• Selected tasks highlight

Moving Multiple Tasks

1. Select multiple tasks
2. Drag any selected task
3. All move together

Limitations

Multi-select editing:

• May only support horizontal moves
• Cannot resize multiple at once
• Cannot change durations proportionally

Save and Sync

Automatic Saving

Changes typically save automatically:

• After drag operation completes
• After resize completes
• After dependency creation

Manual Save

If available:

• Click Save button
• Keyboard shortcut (Ctrl+S)

Sync Indicator

Look for indicators showing:

• Saving in progress
• All changes saved
• Sync errors

Best Practices

Before Editing

• Review dependencies that may be affected
• Understand constraints in place
• Consider impact on critical path

During Editing

• Make incremental changes
• Watch for constraint violations
• Check impact on other tasks

After Editing

• Review schedule for conflicts
• Verify critical path
• Compare to baseline if needed

Troubleshooting

Cannot Move Task

• Check for constraints
• Verify dependencies allow movement
• Ensure Professional tier subscription

Changes Not Saving

• Check network connection
• Look for error messages
• Try refreshing page

Dependencies Won't Create

• Verify both tasks exist
• Check for circular dependency
• Ensure valid connection points

Unexpected Task Movement

• Auto-scheduling may be moving dependent tasks
• Check for constraints
• Review dependency chain

Related Topics

• Timeline View - Understanding the chart
• Critical Path - Schedule impact
• Tasks - Alternative editing methods