System Configuration : Preferences : Mixing Preferences : Setup Section

Setup Section
Sends Default to –INF
When selected, the initial fader level of newly-created sends is set to – (no audible signal level). When not selected, the initial fader level of newly-created sends is set to 0 dB.
Send Pans Default to Follow Main Pan
When selected, newly created sends have Follow Main Pan turned on, so the Send Pan controls follow the pan controls of the track. When not selected, newly created sends have Follow Main Pan turned off.
Link Mix and Edit Group Enables
When selected, this option links enabling and disabling of Mix and Edit Groups. For example, enabling Group A in the Mix Window automatically enables Group A in the Edit window.
Use Absolute Pan Linking (Pro Tools HD and Pro Tools with Complete Production Toolkit Only)
This option affects behavior of grouped pan controls.
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When selected, grouped pan controls do not maintain relative offsets when any of the grouped pan controls is adjusted. All grouped pan controls snap to the absolute value of the adjusted control.
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When not selected, grouped pan controls maintain relative offsets when any of the linked controls is adjusted.
Default EQ
This preference lets you choose any installed EQ plug-in as the default, which makes it available for quick assignment, both on-screen and on ICON worksurfaces (Pro Tools HD and Pro Tools with Complete Production Toolkit only). On-screen, the plug-in appears at the top of the Insert selector pop-up menu. On ICON worksurfaces, the plug-in appears first in the list of menu choices on the rotary encoders.
Default Dynamics
This preference lets you choose any installed Dynamics plug-in as the default, which makes it available for quick assignment, both on-screen and on ICON worksurfaces (Pro Tools HD and Pro Tools with Complete Production Toolkit only). On-screen, the plug-in appears at the top of the Insert selector pop-up menu. On ICON worksurfaces, the plug-in appears first in the list of menu choices on the rotary encoders.