Mixing : Automation : Automating Sends

Automating Sends
For more information, see the following topics:
Pro Tools provides automation of send level, send mute, and send pan (for stereo and multichannel sends only). This makes it easy to control effect levels and placement during mixdown with great precision.
Send level and mute can also be configured to follow groups.
To automate a send level, mute or pan:
1 In the Automation window, make sure the automation type is write-enabled (send level, send mute, send pan).
2 In the Mix or Edit window, set the Automation mode for each track containing sends you want to automate. For each track, click the Automation Mode selector and set the Automation mode. For the initial automation pass, choose Write mode.
3 If sends are not currently visible on your tracks, select View > Mix Window (or Edit Window) > Sends A–E (or Sends F–J).
4 To display send controls, do one of the following:
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Click the send to open the Output window for the send that you want to automate.
– or – 
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Select View > Sends A–E (or Sends F–J) and select one of the individual views (such as Send A).
5 Start playback to begin writing automation.
6 Move the controls you want to automate.
7 When you have finished, stop playback.
Send level, mute, and pan can also be configured to follow Mix Groups (see Automation Preferences).