In the side menu, click on Environment.

Click on New, select the Cloud, fill in the Name and Tag. Then click on Save.

Click on the icon 

Select the Operational System tab then select from the available operating systems (Amazon Linux, CentOS 7 and 8 or Ubuntu) which one you want to install the agent

After selecting the system, a box will appear, containing the code designated by the platform for custom cloud installation selected. GitHub must be installed on the system operational. Copy and paste the code into the desired system and once the installation is complete, continue configuring the monitoring.