This article will give you a step by step guide on how to install Dolphin from your cPanel. Sign into your cPanel and follow these steps:
1) Click Softaculous.
 
2) Scroll down to Portals/CMS. Find the Dolphin link and click on it.

This post will give you a step by step outline on how to register Dolphin for free.
1) Set up Dolphin and log into your account. (instructions on how to set up Dolphin on your domain and log in can be found here)
2) After you log in, you should see this screen

Related documents:
[1] Move Dolphin installation to public_html
[2] How to Install Dolphin From Your cPanel Using Softaculous
This post will give you a step by step outline on how to set up Dolphin on your domain.
1) Log into cPanel
2) Go to “Software / Services” and click on the “Site Software” button

Related documents:
[1] How to use the Dolphin Autoinstaller on Arvixe
Dolphin if installed manually using Dolphin installer will let users install it in any directory but cPanel plugin for Dolphin installs Dolphin inside a subdirectory and not in public_html which is the root folder of main domain. The clients that use cPanel plugin for Dolphin installation [...]

Follow the steps below to reset your Boonex Dolphin’s Admin password:
1) Login to cPanel
2) Go into PHPMyAdmin
3) Click on the database you want to modify, it typically has “dol1″ or “dol2″ or something similar in the name
4) Go into the “Admin” table
3)Click “empty” on the top right and empty it out
4)Click insert on the top [...]