From the vMix Settings window click the Shortcuts tab and then click Add

To quickly select the Key or Control you wish to assign this shortcut to, click the Find ... button

and then press or move the control you wish to use.

MIDI Note: If using a MIDI controller, make sure it has been plugged in and turned on before starting vMix.

Then from the Shortcuts tab in Settings click the MIDI Settings button to enable the device.

Function

Click the arrow next to the Function dropdown box and the Select Function window appear with a number

of commands or macros to choose from, organised by category.

Duration

If the function selected is a transition, configure the duration here in Milliseconds

Input

If the function controls a particular Input, select it here.

You can also tick Assign Shortcut to Input Number so this shortcut will always

control any input assigned to a particular Number, otherwise the shortcut will

control the same input even if it has been moved.

Title, Description1, Description2

Assign some optional text to uniquely identify your shortcut when it is displayed in the Web Interface

Local Shortcut (This Preset Only)

Assigns the shortcut to the currently open Preset, otherwise the shortcut will be available

to use with any preset.

See Local and Global Shortcuts for more information.