Configuration in the Sen2cor edition

Hello, I’m new at this.
Following the installation tutorial for Sen2cor 2.3.1, in SNAP 3.0 ( In the 3.5 minute, I do not get equal to the tutorial and what shows the help option of that window.
For this version. Is it necessary to edit Sen2cor?

In the section of resolution can be changed the resolution according to the interest of the user ?, or is by default. (In this case I need to process these images to see the deforestation).

Thanks for your support.

Attachment screenshot indicating the section of my doubts