All the window’s borders can be moved. With this, the size of the window you just use can be ideally set. The default structure after selecting a feature is as follows:
If you need more space for the requirements just move the common border with test design right:
You can also insert the Test design window below the requirements by pressing the icon right of Requirements:
The result screen is:
You can revert it by pressing the similar icon right of Requirements (see the line in the middle).
Any windows can be closed by pressing x. You can open them by selecting the appropriate item ‘Test design’, ‘Requirments’, etc.: on the bottom:
You can close the Project menu (here pizza) by pressing the sidebar icon:
and open again by pressing the same icon: