how can the ordinances ready feature show more than the limited amount of ancestors ready for work? Thanks
It can't. It is designed to give you just enough for one day at the temple.
However, if you take those few ancestors who Ordinances Ready presents to you and go to their Family Tree pages, you will likely find that they need other ordinances or that their extended family does. Now that we can print out cards for anyone that has been shared with the temple, you can use Ordinances Ready to potentially point you in the direction of a whole cluster of needed ordinances.