First make sure that API access is enabled by going to OpenAdmin > API or by running opencli config get api from the terminal.

ClientExec server needs to be able to connect to OpenAdmin on port 2087, whitelist both servers: csf -a SERVER_IP.

SSH to your ClientExec server and inside path_to_clientexec/plugins/server run this command to download the plugin: git clone https://github.com/stefanpejcic/openpanel-clientexec.git openpanel.

In ClientExec admin, add a new server and select the OpenPanel plugin, then fill in the OpenAdmin admin username/password, hostname, and port (default 2087).

On the ClientExec server create hosting plans that match the package names created on the OpenPanel server, then assign the OpenPanel server to the product.