For configuration of plugin you need to follow following steps :
1- Go to Quickbooks Online site and Sign In or Sign Up with
2- Click on create a new app for the accounting of your
3-Select and open
5- Copy client id form keys
6- Copy Client Secret form keys panel and put in plugin configuration section Client Secret.
7-Put Plugin configuration page url as quickbooks redirect url in the keys tab redirect url section.
8-Select Account type in plugin configuration page.
9-Now click on authenticate button.
10-Now your store is connected to quickbooks online.