– leveraging your Microsoft
To install and use HelpDesk OSP you need Microsoft Outlook 2007 or above installed on each client. You also need a functioning SharePoint site, version 2 or above. Also Office 365 Outlook and SharePoint is supported. HelpDesk OSP works with SharePoint lists, and those lists can be hosted on many brands of SharePoint as well as both the SharePoint services versions and the SharePoint Portal Server and MOSS versions.
HelpDesk OSP helps you get more out of those platforms, but it does not assist you with the general configuring of them.
Each client also needs to have .NET Framework 3.5 installed. If you don't have it installed you can. If a client without .NET Framework 3.5 tries to open the Configure dialog he gets a message asking him to download this application.
The SharePoint site
If you want to use HelpDesk OSP with SharePoint, you must have a SharePoint site set up and functioning. It does not matter if it is hosted online or in-house. Often the Issue tracking list or the Tasks list is suited for helpdesk tickets, but you can use any of the templates provided by Microsoft and customize it after your needs.
HelpDesk OSP for Outlook and SharePoint ‒ User Manual