Per the release notes update
The MCA Configuration Editor has been enhanced to make the default
handler configuration section easier to use. Default handler settings
are now divided into two groups. Global settings apply to the global
default handler. Application Specific Settings allow a much easier
method for adding applications and assigning custom settings for them.
In addition support for medApp button default handlers has been added.
Using executable files for default handlers is also easier to do. Simply
assign an executable instead of a DLL as the button handler.
How can someone reassign the button functionality like with previous versions of MCA (prior to 3.1)?
Is there support for this in MCA 3.1?