How to add firewall exceptions for the license server executables on macOS

In the top menu, open the Apple menu and select System Preferences.
Select Security & Privacy.
In the bottom-left corner, click on the Lock icon. When prompted, type in the username and password of an account with administrator privileges.
Click on Firewall Options...
Under the rules list, click on the + button.
In the Browse dialog, browse to and select the lmgrd executable, in the following location:

/Applications/Toon Boom [Product Name] [Version] [Edition] Network/tba/macosx/bin/lmgrd
Click on Add.
Click on the + button again.
Browse to and select the toonboom executable, in the following location:

/Applications/Toon Boom [Product Name] [Version] [Edition] Network/tba/macosx/bin/toonboom
Click on Add.
Click on OK.