All you need to do is click on Customization, then on Email Templates. Next, click on New Account Email.
You will need to remove the [PASSWORD] placeholder and incorporate the [SET_PASSWORD_LINK] placeholder somewhere in the email. This will be replaced by a unique link that will prompt the user to set a new password.
It could read something like this:
Once the email has been sent and the user clicks on the link, they will be taken to this page where they can set a new password. The SkyPrep logo will be replaced with the logo that you are using on your platform.