From Scratch
You can create a new portfolio from two places:
The Create + tab
The Portfolios section on the Self tab

After choosing Create Blank Portfolio, you’ll be prompted to give your portfolio a name.
Your new portfolio will start with just a Cover Page. From there, you can add and organize additional pages as needed.
From a Template
Portfolio templates created by teachers are available in the groups where they’ve been shared (see Where to Find Portfolio Templates).
To create a portfolio from a template:
Hover over the template (or tap on mobile)
Press Start New Portfolio

If the template title is locked, you won’t be able to rename the portfolio. If it isn’t locked, you’ll be prompted to give it a name.
Any pages included in the template will automatically appear in the new portfolio (alongside the Cover Page). These template-connected pages can’t be deleted, but they can be reordered.