Hope someone can help.

I created a work/holiday rota, now need to update it. simplfy.
It covers 3 shift time zones, each shift is on a seprate Tab. this displays the entire year by scrolling down.

It shows when working,Holiday,Courses for each person on that shift this is drawn of a main tab for everyone. Does anyone know or fancy seeing if they can help me in changing this to make it simpler, have file on hand. Its a huge monster and slow to work.

Any help much appreicated