If your asking about a Userform Multipage tab.
You would use something like this
Multipage1.Value=1
This would show you the second Multipage tab
To see the first tab it would be Multipage1.Value=0
Or if you have Two Multipages
It would be Multipage2.Value=1
You can have several different Multipages of which each one has there own tabs
Just like workbooks and there sheets