Today I had difficulty to find the page, where I could pay for the ticket using points and the rest of amount with money. Google search gave only Eurobonus points only option. SAS website as well is not so simple to navigate and slow.
Thanks to helpful support on the phone, below I will show how to find a page at the moment of writing.
Go to SAS Eurobonus home page https://www.flysas.com/en/eurobonus/
Then scroll down until you see three buttons – choose Points + Money
Search for you trip and choose outbound and inbound flights. Make sure the Points radio box is selected.
in the booking page, which looks a bit like old SAS web page, you will provide booking details and be able to pay using credit card remaining amount.