First, you will need to configure one machine and then export the settings including your account details to a password-protected file.
Then, you need to give the customer the Pulseway Agent installer and this configuration file (with password). Your client should install the Pulseway agent and then import this file into the Pulseway Manager using the password. If you open the Pulseway Manager, the configuration import / export options can be found at the bottom of the screen.