USB and DIN, in one patch.

Your DIN gear gets a name

macOS can see your interface, but not what's plugged into it. To the Mac, your Juno is just "MiniFuse 4 · MIDI Out".

The Add a device on a DIN port wizard asks what's on the socket (a synth, drum machine, controller or groovebox) and which channel it listens on. From then on the port shows the device after an arrow, the way MIDI flows, everywhere in the app.

Sockets on your USB gear, too

Plenty of USB keyboards and synths have MIDI sockets of their own, and a synth cabled to one is just as playable as one behind an interface. Name it the same way, from the port's DIN sockets section in the inspector.

MIDI Noodle already knows the sockets on some common gear, so a MicroLab with none doesn't offer one, and a KeyLab Essential with only an Out offers just that. For anything else, a DIN sockets switch in the port's inspector, or in the device's sheet in Settings › Devices, says whether it has them. It's set per device, so every port on it follows.

Channels with names, not numbers

Give each channel of a port a name: the part it plays or the device listening on it. Two devices on one port each bring their own channel names, so you route to "Drums" rather than to channel 2.

Several synths on one MIDI Out

Many interfaces have a single DIN Out. Chain your synths through their Thru sockets, set each one to its own channel, and one port plays them all.

The Daisy chain over DIN wizard walks through it and checks for two devices on the same channel before anything is built.

Set up once, used in every project

Your USB and DIN devices live in Settings › Devices, so every project knows them. Edit a device there and open projects follow.