You create 3 fingerprints with the same Name.
E.G
port 21
destination address 192.168.1.1
new custom fingerprint name "Internal-AS400"
Port 449
destination address 192.168.1.1
new custom fingerprint name "Internal-AS400"
8449
port 21
destination address 192.168.1.1
new custom fingerprint name "Internal-AS400"
Example Microsoft Lync Signature
Top one is:
61013607
Bottom one is:
62013617
Either of these signatures will appear as Microsoft Lync when you generate reports for Lync.