Camtasia - How to Install Camtasia on MacOS

Download camtasia.dmg from here.
Locate camtasia.dmg.
In most cases, the DMG file is located in the Downloads folder. Open Finder and select Go > Downloads.
Double-click the camtasia.dmg file to open the installer.
The installer window appears. Drag the Camtasia icon into the Applications folder.
In Finder, click the Eject icon.
To open Camtasia, double-click Camtasia in the Applications folder.
If you see the following message, proceed to steps 8 & 9. If you do not proceed to step 10.
Open System Preferences.
Select Security & Privacy > General tab > App Store and identified developers. If you are unable to select this option, click the lock icon to make changes.
Open Camtasia.
Select Camtasia 2019 > Activate.
Enter your software key into the Activation Key field.
Click the Activate button.