On the V-series panels (using EHX v9 or later ) you can assign the same key to multiple shift pages and they all act as one single key.
latching a key on the main page will also mean the same key on shift page 2 will also be latched on . This allows the operator to always have access to their important keys on all pages and the keys will stay in sync in terms of key press and xpt level . We call this function mirrored keys
Only talks keys (or the talk action) is mirrored, but listen keys are not mirrored.
Mirrored keys also work with keys that are assigned via a Assign-Sort-Group