I have several different libraries. I sort by genre. Since I usually read a different genre each day it is easier for me to have libraries by genre. I also manage the library for several of my family members (mother, son, nieces) so having different libraries is easier for me. I know I can go into Calibre and add a singe column to each library but is there a way to do this across all libraries? I want to add a column to determine if it has been read with the answer being the person's name. Instead of going into each one is it possible to add a column that will be across all libraries instead of doing it one at a time.
for any and all help.