Is it possible to split a template like below image?
If it is, may I get some instructions on how to do it please? I've only managed to create the 3 frames in a configuration that is basically rotated with 90 (or 270) degrees from this one.
No, this is not possible. Check the online documentation:
[...] to create a template like the one below, you cannot use the template concept of Smart Forms: [...] The cells of the colored part cover several lines. [...]
The linked article also contains an example on how to split the contents into separate windows.