Scheduling Messaging Help Order
Amion on a Mac

Install CROSSOVER (~$50) and run OnCall directly onto your Mac.

Use OnCloud, our cloud version of the OnCall schedule builder.

Other Options

If you require a locally installed schedule builder client, Mac users may run OnCall using a Windows virtual machine. Amion does not provide technical support on installing Windows or configuring Parallels, VirtualBox, or any other third party software. If your institution offers technical support via their IT/IS team, contact them first to see what their suggested process is for accessing Windows software on your Mac. The options outlined below are suggested for personal Macs not managed by your IT/IS department.

First, you should always check with your IT support staff or IS&T group to see if they have a recommended way for you to access Windows software. For example, if you connect to a Windows-based application server or virtual desktop like Citrix, they may be able to make OnCall available to you there. If your IT staff haven't worked with us before, let them know we're happy to assist them in making OnCall available to their users.

If you'll be using OnCall on a personal Mac, and don't already have access to Windows software via Citrix or similar, you can run OnCall by installing Windows on your Mac. You can do that in two ways:

  • By using a virtual machine, which lets you run Windows in a virtual PC that runs simultaneously with your Mac software or...
  • By dual booting with Boot Camp, which requires you to reboot to switch between Windows and Mac.

We recommend using a virtual machine for Windows. This page outlines common ways to set up that virtual machine. Boot Camp is not covered here.

Virtual Machine Options

Virtualization lets you run Windows and macOS at the same time, switching back and forth instantly or combining Windows and Mac apps on the same screen. Because you're running two systems at once, your Mac might be slower while Windows is running.

There are two main virtual machine programs we recommend:

  • Parallels Desktop: Easier to set up and use. Includes technical support. Costs $79.99 per year (future updates included), or $99.99 1-time purchase (current version only) after free trial.
  • VirtualBox: Free. Setup is more complicated. Does not offer technical support.

Parallels includes a setup wizard that walks you through setting up your virtutal machine and downloading and installing Windows. This is by far the easiest way to get Windows running on your Mac. Click here to download Parallels Desktop.. For an overview of installing Windows 10 using Parallels Desktop, click here. You can contact Parallels customer support here.

If you go with VirtualBox (free, more complicated setup process), the instructions below should get you started.

These instructions are for informational purposes only. We cannot provide in-depth technical support or installation assistance for VirtualBox or Windows. You should be able to find plenty of tips and guides online.

If you prefer a video tutorial, we suggest this one. This video was not made by Amion, but covers the same steps outlined below. (If you can't see the embedded video below, click here to view it on

Install VirtualBox

Visit the VirtualBox Download page. Under the "VirtualBox platform packages" section, click the download link for "OS X hosts."

Once the download completes, open it and run the VirtualBox.pkg installer.

Download Windows 10

You can download the Windows 10 installer from Microsoft at this page:

Download Windows 10 Disc Image (ISO File)

Choose the latest "edition" and your preferred language. Wait for the download links to appear, then cick to download the 64-bit version of Windows 10. Wait for the download to complete. This is a large download (about 5GB) and may take some time.

Set Up VirtualBox

First we'll set up our Virtual Machine in VirtualBox:

  • Open the VirtualBox application from your Applications folder.
  • To create a new virtual machine, click New.
  • Name your VM whatever you want. For Type choose Microsoft Windows, and for Version choose Windows 10 (64-bit). Click Continue.
  • For "Memory size", leave the default of 2048 MB (2GB). Click Continue.
  • For "Hard disk", choose Create a virtual hard disk now. Click Continue.
  • For "Hard disk file type", choose the default VDI (VirtualBox Disk Image). Click Continue.
  • For "Storage on physical hard disk" choose Dynamically allocated. Click Continue.
  • For "File location and size" leave the default location, and set the size to 50GB. Click Create.

Install Windows 10

Now we'll need to install Windows 10 using the Windows 10 ISO we downloaded earlier. An ISO is the virtual equivalent of a DVD, and we'll need to put it into our virtual machine's virtual drive to run it.

Installing Windows will take some time (sometimes up to two hours depending on the speed of your computer.) Make sure your computer is connected to power, and that you will have time to complete the installation, before beginning.

  • In the VirtualBox toolbar, click Start
  • VirtualBox will prompt you to select a virtual optical disk file. Click the yellow folder icon and choose the Windows ISO we downloaded earlier. Click Start.
  • You'll see the Windows 10 installer begin to run. Follow its prompts to set up your new virtual PC. The installation will take some time.
  • When asked to Activate Windows you can either enter a product key (if you have one) or choose "I don't have a product key." You can use Windows 10 without activating a product key, but some features (like setting a desktop background) will be restricted.
  • When asked to choose a Windows version, choose the one that matches your product key. If you don't have a product key, choose Windows 10 Home.
  • When asked to choose an installation type, choose Custom: Install Windows Only.
  • Choose your virtual 50GB hard drive, and click Next.
  • Windows will install. This will take some time; up to two hours depending on the speed of your computer.
  • Your virtual machine (not your Mac) may restart one or more times during installation.
  • Go through the Windows new computer setup screens until you reach the Desktop.

Final Steps - Install Guest Additions

VirtualBox needs to install some Windows drivers that allow you to do things like re-size the Windows screen and connect to your Mac's existing network connection.

  • In your Mac's menu bar, click Devices, then Insert Guest Additions CD image...
  • On the PC desktop, click the File explorer icon (the yellow folder).
  • Click This PC, then Open the CD Drive.
  • Double click VBoxWindowsAdditions. Run the installer.
  • Your virtual machine will restart once again. Now your virtual machine is ready to use!

Install OnCall

Now that you have a functioning Windows PC on your Mac you can install OnCall, Amion's desktop scheduler.


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