Select from the menu Add-ons -> G-Accon for XERO -> Xero Sign In and you need to select Add-ons -> G-Accon for QuickBooks-> QuickBooks Sign In if you going to use G-Accon Add-ons for QuickBooks.
In a new popup “Login to QuickBooks” window click on “Connect” .
For G-Accon for Xero you will see a new popup “Login to Xero.com” window where you need to click on “Connect to XERO”.
By pressing “Connect to XERO” button you will be redirected to xero.com website login screen. Enter your credentials and login to Xero.
Select Organization you need to pull data from and click on the “Allow Access” button.
In case of QuickBooks, you need to login to the following QuickBooks site by entering your credentials:
Upon successful login to Xero and/or QuickBooks site(s) you will see the below screen. Then you go to Google sheets which will activate G-Accon Add-ons we just added.