concrete5 Environment Information
# concrete5 Version
Core Version - 8.2.1
Version Installed - 8.2.1
# concrete5 Cache Settings
Block Cache - On
Overrides Cache - On
Full Page Caching - On - If blocks on the particular page allow it.
Full Page Cache Lifetime - Every 30 minutes.
# Server Software
Apache/2
# Server API
fpm-fcgi
# PHP Version
7.0.23
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I don't believe there is a way to add icons in the menu using the core concrete5 block. But you can achieve this through javascript/jquery although it may become tedious and difficult depending on how many items you need icons added. Please give me more detail on what you want done and I'll try to help you out.
Kind regards,
James