Solved... (Spacefm "default")

[ncmprhnsbl]

this puts an entry in the menu:
open /usr/share/applications/spacefm.desktop with (root) editor
change these lines to:
Name= SU-SpaceFM
Exec=ktsuss spacefm
save as su-spacefm.desktop

also:
go to /opt/porteus-scripts/xorg
and change the 'fmanager' link to point at spacefm

as well as:
in spacefm preferences / advanced
set terminal and graphical SU to ktsuss
which enables the root functions via normal user spacefm