Create locked elevation views for internals and shutters separately
Make two elevation views of the same wall so clients see shutters while internals stay documented in skeleton mode.
To present both internals and shutters, create separate elevation views of the same wall: one with shutters visible for the client-facing look, and one in skeleton mode (View > Turn on Skeleton mode) showing only internals.
In the view settings, rename the view, lock it, then return to preview.
Use Annotate > Align > auto dimensioning to add dimensions: each cabinet's width, the internal spacing (in the skeleton view) and the cabinet height excluding skirting.
A run of several cabinets is dimensioned per unit; no overall run width is added.