Copying the content of a layer to the hover state of a button

Hello,

Let me preface this by saying that I am very new to Storyline.

I have a rollover text box that displays when the user hovers over a button.  I have placed this textbox on its own layer, rather than on the 'hover' state of the button.

Someone showed me in person that it's really a better practice to place the textbox on the 'hover' state, so they copied the textbox from the layer, and pasted it into the 'hover' state on the base layer, then deleted the layer that the textbox was originally on. 

As I watched, I didn't bother to ask how they were doing this, because it seemed pretty self-explanatory:

1. Go to the textbox layer

2. Copy

3. Go to base layer

4. Edit states on the button

5. Right-click on the hover state of the button and paste (or alternatively, control + v)

Step 5 is where I run into a problem, because apparently you can't right-click or control + v on a state, so I have no idea how she pasted this content from a layer to a state.  Any help would be greatly appreciated.  Thank you for your time.