sc-cite-frame-alist

sc-cite-frame-alist is a variable defined in `supercite.el'.
Its value is

nil

• This variable may be risky if used as a file-local variable.

Documentation:
Alist for frame selection during citing.
Each element of this list has the following form:
(INFOKEY ((REGEXP . FRAME)
(REGEXP . FRAME)
(...)))

Where INFOKEY is a key for `sc-mail-field', REGEXP is a regular
expression to match against the INFOKEY's value. FRAME is
a citation frame, or a symbol that represents the name of
a variable whose value is a citation frame.

You can customize this variable.