How do you make one character talk and another character move at the same time?

Creator's Corner
1

Yeah so I have seen this in multiple stories and really want to know how to.

2

Example:
&CHARACTER1 is talk_neutral_loop AND CHARACTER2 is idle_happy_loop

3

Use the & instead of @

Like this

&CHARACTER1 is react_shocked_gasp or something
CHARACTER2 (talk_neutral)
I just got dumped.