tables separated by parts of the day

[thiagonunes]

Hello.
The school I work for has like 31 classes: 11 in the morning, 11 in the afternoon and 9 in the evening. There are 17 hours and teachers may work in any of the parts.
I would like to print a sheet per part of the day without the empty spaces. To do so, I usually edit the html file deleting from the tables the empty rows, but it takes a long time.
Is there a way to reach it with the program or even include it?

Thanks for the attention

[Volker Dirr]

You can import it into TiTiTo and print it from there, because you can skip the hours there.
see:
https://lalescu.ro/liviu/fet/forum/index.php?board=36.0