Upload the wsp file to the "Solutions" gallery under the "Site Settings" page (You should have Site Collection Administrator permissions to do so.)
After uploading, activate the solution
On the Site Setting Page, go to the Site Collection features, find and activate the feature named "Beyondintranet.TabviewWP"
Go to any web page, Add BeyondIntranet Tabview webpart to a zone. You can add Tabview web part to a zone already having multiple web parts Or Tabview webpart can also be the first web part in zone
Change the settings, from the Edit webpart toolbar if needed. Follow FAQ for general queries and settings