Set widget position and size manually
The maximum display size for sources in Multiviewers is their 1:1 format. They can be resized to fit smaller widgets.
In 
Multiviewers⚓
Select a widget.
The selected widget is highlighted.
Use drag and drop on the widget to move it in the Screen.
Use drag and drop on a widget border point to change its size.
Example : OPTION⚓
It is also possible to use the Properties panel:
Go to Properties, click Position and Size to show the corresponding settings.
Set the Position and Size by entering values or using drag and drop.
Tip :
- In the Size property, click
to keep the aspect ratio when changing the size values. - Use bottom bar buttons (Keep aspect ratio, snap to items) to have widgets of equal size or alignment. When enabling snap to item, widgets borders are automatically attracted to other objects (Multiviewer border, widget border, grid snap point) to match their position or size.