Users of Colocation Manager module for HostBill can benefit from possibility of connecting multiple modules under one product. This great feature is especially useful for automatically provisioned servers (ie. using NOC-PS module) that need to be monitored and billed for bandwidth (using Cacti/Observium modules) - all under one package or service.
After activating Colocation Manager plugin, you'll be able to see "Connect more Apps" button in Product configuration screen. You can use it to add multiple apps.
Products with multiple modules connected show separate provisioning box for each App under accounts
