Login to your Login to your Joomla Admin area > Extensions > Extension Manager.
- In Extension Manager:
- In the Upload Package File section click Browse, select the downloaded JoomApps plguin file that you want to install;
- Click Upload File & Install to upload the file and complete the installation
Login to your Joomla Admin area > Extensions > Plugin manager
Look for JAPPS Covid19 within the list then against its name, check mark and click on the button Enable.