In SeeSaw, Click the three dots for the item that you wish to add to Otus.
Choose Share Item
Copy the Share Link
In Otus, open the Student Profile and go to the Content tab
Select Add Item
Enter the correct information and click Upload to Portfolio
Paste the Share Link from SeeSaw and name the item
Don't add every single SeeSaw item to the portfolio. Instead, try adding those that show growth or those that you want to see alongside all of the other student information that is available within Otus!