You can assign a footswitch to assume the Record button function:
From page 362-3 of OM:
FOOT SWITCH ASSIGN
An optional foot switch—such as a Roland DP-2 or BOSS FS-5U—connected to the
VS-2480’s rear panel FOOT SWITCH jack can perform a variety of functions. This
parameter determines what a connected foot switch does. You can set the parameter to:
—so you can start and stop project playback with the foot switch.
—so you can toggle in and out of Record mode with each press of the foot
switch, allowing for hands-free punching.
28—UTILITY Menu Parameters
—so the foot switch acts like the TAP button: A press of the foot switch
places a marker at the timeline’s current position.
—so the foot switch acts like the NEXT button, moving the timeline to the next
phrase or marker, according to the setting of the PREVIOUS/NEXT Sw parameter
—so the foot switch acts like the PREVIOUS button, moving the timeline to
the previous phrase or marker, according to the setting of the PREVIOUS/NEXT
Sw parameter (see below).
—so the foot switch responds to received Play/Stop instructions from a
connected General Purpose Interface
A cheap normally open switch will work nicely