Add network mask as allowing File/Print Sharing/WMI remote access?

How would I go about doing this? I’ve created a network zone. Do I have to manually identify the ports etc, or can I somehow use the built in definitions.

Use firewall\commontasks\stealth port wizard and define a new trusted network by selecting the zone you defined

This will create global rules.
You may need to edit your application rules if needed.

To do further troubleshooting use Comodo Firewall Pro Configuration Reporting Script to post the necessary info.