# Schedule
The *Voyage schedule (Figure 1)* visualization may be found on the right-hand side of a voyage drawer.
This section is highly customizable: for example, you can change the voyage start date, lock it, update the port call sequence, and edit port calls by hovering over a port call box.
Figure 1. Voyage Schedule
The *Schedule Timeline* is a fully interactive module. Each port represents a draggable block - if you reorder the blocks with not-fixed port calls *(Figure 2)*, you will update the port call sequence on the opened voyage correspondingly:
Figure 2. Schedule Drag'n'Drop
Next, each *Port Call* block is clickable, and it brings up a [Port Call](/release-8.25/voyage-management-system/step-by-step-guides/port-calls.md) drawer.
The small ovals inside of each *Port Call* block are called chips and include a piece of related information: *Days at Sea + Extra Days at Sea*, *Actual Speed*, and *Distance between Ports*. Every oval is clickable and allows editing corresponding sea passages *(Figure 3)*.
Figure 3. Edit Sea Passage
Moreover, the Port Call blocks include a small hover actions toolbar that provides the following actions on the voyage schedule sequence: show Port Cost history overview, create new Port Call to the current schedule, edit the selected Port Call, or delete the Port Call.
#### Hover Toolbar
When hovering the mouse over a port call in the schedule, a toolbar in the upper right will appear.
* [View](/release-8.25/voyage-management-system/step-by-step-guides/voyages/maintain-voyages/overview/schedule/find-a-port-call.md) and [maintain](/release-8.25/voyage-management-system/step-by-step-guides/voyages/maintain-voyages/overview/schedule/maintain-port-calls.md) port costs for the selected port.
* To *insert* a port call before or after the port call you are editing, click the **Create** button and select **Before** or **After.** A window to create a new port call then pops up.
* To *edit* a port call, click the **Edit** button.
* To *delete* a port call, click the **Delete** button.
* To *change* the order of port calls, simply *hover over* a port call to move it into place.
Figure 4. Schedule Port Call action tooltip
### Edit Port Call
To edit a port call in the schedule, click the pencil icon in the action tooltip. A popup modal then shows with editable essential port call details *(Figure 5)*.
Figure 5. Edit Port Call action
{% hint style="info" %}
Note that the port can only be changed if the Arrival-, Berthed-, and Departure Date are unfixed. If any of these dates are fixed, the port selector will only show available terminals on the currently selected port.
{% endhint %}
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