From this section you can enable the display of the clock (or other text). In the Text box you can enter a static text or WILDCARDS LIST

You can choose the font, size, style, internal color and outline color and of course the position on the screen.

In addition to the text clock, you can choose other animated clocks (not customizable) from the list.

You can enable or disable the clock from the properties of any object that is on air: