You can use Mockplus’ hotkeys to quickly add basic components, for example,

create a button: B

create a label: A

create a text area: T

create a shape: S

create an icon: C

create an image: E

create a textbox: R

create a line segment: X

Get the cursor into the canvas, simply type B, E or A… and you will be able to quickly create a relative component at the spot where the cursor is.

A video tutorial is provided below:

Using Shortcuts to Quickly Add Components in Mockplus