You will see the word Available for certain features of OpenEdge in ProTop Real-Time and in the Configuration dashboard in the Portal. This is what it means.
OpenEdge features, like OE Replication, Large Files, OE Auditing, AI Archiver and Failover (clusters) will have a value of Available if that feature exists for the version of OpenEdge that you are running and it is not already in use. If the feature is in use, Available changes to Enabled in ProTop.