Well it came to the point I needed to add removable drive capability to work with some usb thumb drives.
So I add the file 99-automount.rules to /etc/udev/rules.d and put the fallowing in it:
ACTION=="add", SUBSYSTEM=="block", KERNEL=="sd[a-z]*",RUN+="/usr/bin/mount -m /dev/%k /home/umbrel/umbrel/home/%E{ID_FS_LABEL}"
ACTION=="remove", SUBSYSTEM=="block", KERNEL=="sd[a-z]*", RUN+="/usr/bin/umount /home/umbrel/umbrel/home/%E{ID_FS_LABEL}", RUN+="/usr/bin/rm /home/umbrel/umbrel/home/%E{ID_FS_LABEL}"
now I have removable drives. Thought I would share.