In order to be able to incorporate LaTeX, you will have to configure the path to your LaTeX executable. Go to File -> Preferences -> External.
"The incorporation of LaTeX is a work in progress, in other words, not completely implemented, and also is available only in the development.
Various solutions were proposed, but the original poster wanted to try to use LaTeX in a Render frame to accomplish this, and met obstacles he.
1.3.1 Implementation; 1.3.2 Image frame vs. group of vectors; 1.3.3 Objects; 1.3.4 Processing the LaTeX input; 1.3.5 Handling missing LaTeX.
I want to share here my efforts in newspaper making with latex. The latest try is using scribus and render frames. The success so far: partially register-true layout .