There is a configuration xml that could potentially be modified to configure this, however anytime policysync runs it would be overwritten and the change undone. I'd suggest submitting an enhancement request. You can access this via the "Ideas" lightbulb icon at the top right of this page.
This can be set on the Core Server:
This is set in C:\ProgramData\Landesk\ServiceDesk\My.BridgeIT\tps.config
Add the following:
<add key=”DefaultHome” value=”ServiceCatalog” />
Please watch the '' quotes as they don't always get copied correctly to and from the community. Match them with the other quotes in the file.