---
title: "Manage channels"
canonical: "https://help.vicon.com/space/Evoke18/397969952/Manage%20channels"
format: markdown
---
The following topics explain how to use controls in Graph Plots to manage the channels, including how to display or hide the key and how to pin and unpin channels.
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## Display or hide a key for the graph
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|  | To toggle the display of selected or pinned channels, select the ** Channel Key ** button on the far right of the Graph Plots toolbar.
For more information, see [Change the information displayed in the Channel Key](#ChannelKey). |
## > Macro (anchor)
Change the information displayed in the key
The Channel Key displays a list of the active channels. If the subplot layout is set to Single Plot, component names are also displayed, with each channel component displayed in a different color.
> ✅ **Tip**
> ✅ To pin/unpin all or remove all channels, right-click a line in the key and select the relevant option.
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| **Subplot Per Type layout**
**Single Plot layout**
 | - Color patch – The color used for corresponding traces.
For information on how to change the colors used for each trace, see [Preferences parameters](https://vicon-help.atlassian.net/wiki/spaces/Evoke18/pages/397970366) in the *Vicon Evoke Reference Guide*.
- Component name
- Channel name
- Pin button – Click to toggle the relevant channel's pin status.
- Remove button – Click to remove the relevant channel. This removes its traces from the graph and de-selects any input channel sources.
- Dependent channels are highlighted when all their input channel sources are selected.
- Independent channels are highlighted when they are the current channel type.
For information on how to display statistics (current value, mean and standard deviation) for each channel, see [Show or hide channel details](#ShowChannelStats). |
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## > Macro (anchor)
Select and pin channels
Selecting a channel source automatically adds one trace for each of its components, creating subplots as required for each channel component type. Deselecting a channel source removes the traces (and any empty subplots).
Pinning a channel prevents removal of traces on deselection.
**To pin a channel, do either of the following:**
- Open the Channel Key and click the relevant Pin button > Macro (inline-media-image)
for the component and channel name.
or
- Right-click in a Graph Plot window, select **Pin Channel **and then select the relevant component or channel (see [Graph Plots mouse actions](https://vicon-help.atlassian.net/wiki/spaces/Evoke18/pages/397969945)).
Pinning is useful for building plots of disparate types, or comparing multiple selected channels to a reference channel.
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## Show or hide channel details
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|  | Select the **Show channel details** button to the right of the **Channel Key** heading to display or hide details of the channels displayed in the key, including the current channel values, channel means, and channel standard deviations.
- Mean and standard deviation are computed over the range of data stored in the channel cache.
- For live data, the size of this range is controlled by the live data range (see [Change the scale of graphed data](https://vicon-help.atlassian.net/wiki/spaces/Evoke18/pages/397969905))
- For review data, the whole clip range is used. |
## Show or hide channel value tooltip
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|  | Select the **Show channel value tooltip** button to display a tooltip when you hover the mouse pointer over a subplot. The tooltip displays the channel value at the hovered time, and provides more information on frame/sample numbers and data gaps. |
## Set the opacity of lines between gaps in channel data
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|  | Select the **Change opacity** button and move the slider to change the opacity of lines drawn between gaps in the channel data |