What commands Entity Framework 6 enable migrations?

In Entity Framework 5.0, which supports a single DbContext per Database, we use this syntax

Enable-Migrations -Contexttypename myDbcontext // to enable migration

update-database - verbose // to update Database Schema

How do we do the same things in Entity Framework 6 for multiple DbContext for a single Database? Please include an example or link.

Anticipated Thanks

Regards

Zulfiqar