Install Piggy

To install Piggy on your server, go to https://piggy.gg/dashboard, and login with Discord.

On the (Server) Dashboard, you see all the servers you're admin on, and can select a server to invite piggy there.

Discord will them ask you to select what privileges Piggy should be given. By default all permissions are selected. (unsure how many privileges you need to give the bot for things to work)

Setup
Then you have invited Piggy to the server & given it enough permissions, the site will redirect to Piggy's settings for your server:
 * you can select which channels Piggy can be used on
 * you can customize what command is used for Piggy,  is the default option.
 * you can select what channel is used for announcements, such as surprise and daily chests.