How do I scroll down the page when adding new blocks in the Composer window?

Hi,

I am testing the new EB5 Composer and creating a blog using both the Blank template and the News template.

In the Blog area I can see where I can place the content, but I am restricted to the window size. Once I have added a couple of blocks I can no longer scroll down the page to add more content. I have looked for obvious things like insert new page, but cannot see anything that does this. Are we restricted to the short window for creating blogs?

I tried it with the News template also, and tried to drop a block under the bottom images but it wouldn't allow me to scroll below that area.

How do I scroll the Composer window beyond the one that's there?

Kind regards

Mel