# Gantt
The Gantt chart provides a day-by-day (week or month) view of your planned schedules.
It allows you to view, move, and resize production and non-production schedules. This section is the complete reference for how schedules behave when you interact with them.
### Colour Legend
A legend is displayed above the chart showing what each colour means:
| Category | Status | Colour |
| -------------- | --------- | ---------------- |
| Production | Running | Green |
| Production | Completed | Light green |
| Production | Planned | Green (darkened) |
| Non-Production | Running | Blue |
| Non-Production | Completed | Light blue |
| Non-Production | Planned | Blue (darkened) |
### Schedule Types
How a schedule can be moved or resized depends on its **order type**. Each production schedule displays its order type as a badge.
| Acronym | Order Type | Description |
| ------- | -------------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| **FQ** | Fixed Quantity | Schedule has a set quantity but no specified end time. The ideal end time is calculated automatically from the cycle time of the SKU. |
| **FE** | Fixed End | Schedule has a set end time but no specific quantity (i.e., fixed duration). |
| **FQE** | Fixed Quantity & End | Schedule has both a specific quantity and end time. The normal SKU cycle time will be ignored. |
| **C** | Continuous | Schedule has neither a set quantity nor end time. The station will remain on this SKU until manually ended. |
### Start/End Mode
Each production schedule also displays a start/end mode badge indicating how it will be started and stopped. This is only shown for schedules that have not ended.
| Acronym | Mode | Description |
| ------- | ---------------- | ------------------------------------------------------------------------------------------------- |
| **ASE** | Auto Start & End | Schedule will automatically start and end at the planned times, regardless of quantity completed. |
| **AS** | Auto Start | Schedule will automatically start at the planned start time. |
| **AE** | Auto End | Schedule will automatically end at the planned end time, regardless of quantity completed. |
| **M** | Manual | Schedule will need to be manually started and ended by the operator. |
### Hovering Over a Schedule
#### Gantt Bar Tooltip
Hovering over a schedule bar on the Gantt chart shows a tooltip with: work order reference, SKU name, quantity (or ∞ for continuous), order type acronym, and start/end mode acronym.
#### Schedule Detail Panel
When a schedule is selected, hovering over start or end times (shown with a dashed underline) in the detail panel reveals additional timing details:
* **Actual Start** — when the schedule actually started
* **Actual End** — when the schedule actually ended
* **Ideal End** — when the schedule is expected to end based on production speed
Hovering over the order type or start/end mode badges shows their full description.
### Moving a Schedule (Drag)
You can drag a schedule left or right to change when it starts. All times snap to 15-minute intervals. Schedules cannot be moved between stations. Schedules cannot be moved to a time in the past.
#### Not Started Schedules
| Order Type | What happens when you drag |
| ------------------------------ | ---------------------------------------------------------------------------------------- |
| **FQ** (Fixed Quantity) | The schedule moves to the new start time. The expected duration stays the same. |
| **FE** (Fixed End) | The schedule moves as a fixed-length block — both start and end shift together. |
| **FQE** (Fixed Quantity & End) | Same as Fixed End — the block moves together. |
| **C** (Continuous) | The start time moves. The bar continues to extend to the edge of the visible time range. |
If the schedule has auto-start enabled, the automatic start time is also updated to match the new position.
#### Running Schedules
Running schedules **cannot be dragged**. Once a schedule has started, its start time is locked.
#### Completed Schedules
Completed schedules **cannot be dragged**.
### Resizing a Schedule
You can resize a schedule by dragging its start or end edge to make it longer or shorter. All times snap to 15-minute intervals.
#### Not Started Schedules
| Order Type | Drag start edge | Drag end edge |
| ------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------- | -------------------------- |
| **FQ** (Fixed Quantity) | Not allowed — *"Cannot set the end time of a 'Fixed Quantity' type schedule. To move the start time, drag from the centre of the box."* | Not allowed (same message) |
| **FE** (Fixed End) | Changes the start time | Changes the end time |
| **FQE** (Fixed Quantity & End) | Changes the start time | Changes the end time |
| **C** (Continuous) | No resize handles | No resize handles |
If the schedule has auto-start or auto-end enabled, the automatic times are also updated to match.
#### Running Schedules
The start edge **cannot be resized** on a running schedule — a message will appear: *"Cannot change the start time of a running schedule."*
| Order Type | Drag end edge |
| ------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------- |
| **FQ** (Fixed Quantity) | Not allowed — *"Cannot set the end time of a 'Fixed Quantity' type schedule. To move the start time, drag from the centre of the box."* |
| **FE** (Fixed End) | Changes the end time |
| **FQE** (Fixed Quantity & End) | Changes the end time |
| **C** (Continuous) | No resize handles |
#### Completed Schedules
Completed schedules **cannot be resized**.
### Confirmation Dialog
After any drag or resize operation, a confirmation dialog is shown before the change is saved. The dialog displays the before and after values for the start and end times.
If the schedule has auto-start or auto-end enabled, the dialog also notes this:
* *"This schedule will start and end automatically when planned."* (ASE)
* *"This schedule will start automatically when planned."* (AS)
* *"This schedule will end automatically when planned."* (AE)
### Editing a Schedule
#### From the Gantt Chart
Click on a schedule to open the detail panel, then click **Edit** to open the edit form.
* **Not started schedules** — all fields can be edited
* **Running schedules** — the start time is locked and cannot be changed; all other fields remain editable
* **Completed schedules** — the Edit button is greyed out and the form cannot be opened
### Continuous Schedules
Continuous schedules have no defined end time. On the Gantt chart, they are shown as a bar that extends to the right edge of the currently visible time range (whether viewing by day, week, or month). The bar length updates automatically when switching between views.
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