Shary -
I had to re-watch the video to try and determine how to answer your question.  Nothing in Lesson 6 (above) matches what you are describing.

Can you please make sure you're in the correct lesson #1 and #2 expand on what you are trying to do.

Hi Scott.  Thanks for your efforts to answer my question.  I went back to the Beginner Level 4, Lesson 6 video and picked up the time stamp.  Richard's explanation starts at 4:06, but specifically gets to the 'old school trick' that I was intrigued by at 4:50.  No worries if  you can't find it though. I do understand how to associate the label with the control source.  Just anything that can save a step or two is a winner in my book.

So basically two ways or associating the label back to the control.

1 - Click on the error triangle & choose Associate Label with a Control.  Choose the control to associate it to.

2 - Cut the label (CTRL-X) then click on the Control that doesn't have the label and paste (CTRL-V).  Now that label is associated with the control again.  This was the "old school" way you used to have to do it.  Method one didn't used to exist.

'then pasting(CTRL+V) to create a label' this doesn't create a label.
You need to already have a label that you cut then paste onto the control to associate it.

Alex Agreed, guess it was apparent to me from the video.  "Cut the label (CTRL-X)..."

Thanks Scott and Alex.  I had actually overlooked the CTRL-X step in the video.  Got it now!

Alex - Technically you don't have to create a label first, then cut it, in order to paste it.

I didn't want to confuse the issue, but you can click on any label and press CTRL-C (Copy).  Now click on any control that doesn't have a label (that would normally have a label) and Paste it.  That will both create a label and associate it with the control you clicked to paste it to.
In fact, If you had 5 text boxes for example that you previously removed the label from you could click each one and paste with out copying again.  Click1 paste, Click2 paste, ..., Click5 paste.

Well a label still has to exist' be it cut or copied.