Images can be inserted to a Mathcad Prime worksheet, but there is no control for position, say in relation to text.
Suggest providing controls to move image backward or forward in the viewing level.
There are examples for graphic controls. When using MS WORD, an image can be moved backward or forward -- behind text, or in front of text, etc.
It is a simple procedure: right click on image, select command, done.
At present, Mathcad Prime 6.0 places text behind and partially above top part of an image. But when the text box is below the top of image, the text will be in front of the image. When first observing this, I thought it was a random selection. See attached file with example of present feature.