If you set the toggle attribute, all buttons will have the toggle behaviour.
If you also set single, only one button at a time can be pressed.
The size attribute will set the size of all the elements inside the group. You can also set the size of each element individually.
The disabled attribute will disable all buttons and inputs inside the tef-group.
You can group tef-input elements with tef-button elements.
With the row attribute the elements will have a blank space between them.
If row is not set, the buttons and inputs will be grouped together.