Really simple - how do I install a utils package

Hi all,

I'm still a relative newbie to Plesk, and I do not do much server work (I'm a part-time front-end developer most the time). However, I am in charge of maintaining what already exists, and in order for a plug-in to work within something else, I need to install poppler-utils (pdftotext) for use within an app on a specific domain. I am trying to follow the instructions of the plug-in that say the following:

"[the plug-in] requires a command-line program installed on your server:...

Really simple - how do I install a utils package