If you want to print documents in batch, you should first download them to your computer.
To do so, isolate the desired documents using the filters on your list, for example here estimates from last week:
Tick estimates you want to export:
Then use the ZIP download action:
The ZIP file is downloaded to your computer (in your browser's download folder). Unzip. The files are displayed:
For mass printing, just open your printer panel and drag the files in the printer queue:
Note: Mac OS is used for example, but the handling is similar for other operating systems.