Tapping a free space on a screen opens the Add Window pop-up. The tapped grid field is used as the upper left corner of the created window. From here, the window takes all the available space it can and becomes as big as possible, trying to fill all available space on the screen.

Tap, hold, and drag on an empty screen to draw a square. Releasing the screen opens the Add Window pop-up, and the selected window fills the drawn square.

The window size can often be made smaller.

In the lower right corner of each window, there is a small resize corner:

Tap or click, and holding this corner allows it to be moved. Moving it resizes the window.

Windows can also be resized by tap and hold in the title bar and meanwhile tap another location on the screen. The window will fill the available space.

Windows can also be moved or resized by moving the entire window. Tap or click and hold the title bar while moving it on the screen. It will show the grid, and the window can be dragged and dropped to a new position.

Windows cannot overlap each other, so it can only be as big as the free space allows. If a window is moved up against another window then it will resize the window.

The windows snap to a dotted grid. This grid is used when windows are created, resized, and moved. There are half-size grid dots, but pools and preset windows are limited to a full grid size when resized.

Some windows have a minimum size limit. For instance, a Fixture Sheet window needs to be a minimum of 3 x 2 grid fields.