Starting Add-Ons 
You start add-ons based on the company preferences and user preferences you set in the Add-On Administration window.
SAP Business One starts the add-on automatically.
You start it manually using the Add-On Manager.
For more information, see Setting Company Preferences and Setting User Preferences.
Prerequisites
You have installed the add-on on your workstation. For more information, see Installing Add-Ons.
Procedure
From the SAP Business One Main Menu, choose
Administration 
Add-Ons Add-On Manager Installed Add-Ons 
tab.Select the relevant add-on and choose the Start button.
SAP Business One starts the add-on and sets the status to Connected.
To close the Add-On Manager window, choose the OK button.
Result
You can use the add-on in SAP Business One.