Can I use UJAM plug-ins with Garageband?

Apple's free music creation software lets you host some UJAM plug-ins (Virtual Guitarist, Virtual Drummer, Beatmaker, etc.). Please follow these steps to set this up:

1. Go to GarageBand > Settings… > Audio/MIDI and ensure that "Enable Audio Units" is checked.
2. Create or select a Software Instrument track.
3. Select the track and click the Smart Controls button on the toolbar (it looks like a knob).
4. In the Smart Controls panel at the bottom, click Track then in the Plug-ins section click the current instrument and change to AU Instruments > UJAM.
5. Choose the plug-in you want to use.

Important note: 
Even if you authorized your plug-in with another DAW, it might come up in Trial Mode when you open it in Garageband. This is common when using Garageband, but can be easily resolved: Just re-enter your credentials to re-authorize the plug-in while in Garageband.