Before start, there is a basic tutorial for how to use skiiiD

https://hackaday.io/project/167458-getting-started-with-skiiid-editor

#1 Launch skiiiD and select New button

#2 Select ①Arduino Uno and then click ②OK button

#1 Click '+' (Add Component Button) to search and select the component.

#2 ① search Servo Module on the search bar and

#3 ②Click Servo Motor,

#4 then you can see ③ pin indication. (You can configure it.)

#5 ④ click ADD button

#6 ⑤Added Module has appeared on right pane of the editor page.

setAngle() - Rotate the servo motor according to angle typed