How to block specific app from use/access internet

Hi, i’m new to this application and i can’t handle how to block specific app only from accessing internet.
When i block it … its blocking also accessing other computers in my lan. Is it possible to define whitelist with allowed addresses?

Dear @Julian_Nachev Thank you for your message and your interest in GlassWire.

To prevent an app from accessing the internet, please employ the Ask To Connect Feature, which is described here:

You may also use the Click To Block feature to restrict internet access.

Additional details can be found in GlassWire User Guide: GlassWire User Guide

Currently, GlassWire does not support white list Mac/IP addresses, although it is on our road map along with other advances to the firewall.