There is a reason why you don't save as a Text Box Building Block?
Automated Boilerplate Using Microsoft Word (AutoText, AutoCorrect, Building Blocks, and more)

Quick Parts keeps insertion point of the text box away from the desired destination. Maybe, you are pointing to: *Using macros to insert AutoText from a global or document template*

Once you insert the TextBox from a Building Block, you can easily move it to where you want it. It will start at the position it was in when you saved it originally as a Building Block.

Your proposed layout has the text box in front of text. Are you sure that you want to occlude text in your document level?

While you can do what you want using a macro, you are reinventing the wheel.
Yes, you can use a macro to insert AutoText or another building block. You can also simply attach a keyboard shortcut to the Building Block.

Even though it is dated, I strongly recommend that you review Word for Wordperfect Users. Trying to do things in Word the way you would in WP makes things much harder.

I admit, that the request is somewhat strange. But the text box in front of text was tried and tested formula for me. The inconvenience is that I'm obliged to insert the text box by simple copy and paste.

Yes, but its tedious and time consuming to drag a dozen of text boxes on a single page. The whole of my thread is based on the assumption that MS Word is able to insert a text box, wrapped as- *in front of text*, somewhere near the cursor. Am I wrong?