These are my notes for running Mnova on Arch Linux
Instsall the version of Mnova you need from https://mestrelab.com/download, and choose the AppImage version.
Make a directory for your Mnova stuff, and move the AppImage file as well as your license to that directory.
Make the AppImage executable with the following command
chmod a+x <APPIMAGEFILENAME>
Alternatively, you can do this through a GUI file manager.
By running the file, you can open Mnonva. Once Mnova is opened, you will need to choose your license.
If you want to be able to run Mnova through an application launcher such as Rofi, you need to create a .desktop file. To do this, navigate to your .local/share/applications directory.
Create a file named mnova.desktop in your .local/share/applications directory.
touch mnova.desktop
Then, in a text editor copy and paste the following
[Desktop Entry]
Encoding=UTF-8
Version=14.3.0
Type=Application
Terminal=false
Exec=/home/itmoth/mnova/MestReNova-14.3.0-30573.AppImage
Name=Mnova
Icon=/home/itmoth/mnova/mnovaicon.png
Replace the version with the version that you have installed, and replace the path to the Mnova AppImage with the location that you have installed it. If you have an icon for Mnova you can also change the icon line.
Now, Mnova should pop up in your application launcher!