It's easy to create a reader's spread automatically with the Prinect Prepress Manager's "Create Readers Spread..." (see Automatic Creation of a Reader’s Spread in Prinect Prepress Manager).
Here are some tips for the case that you will set it manually:
You can create a true-binding reader's spread from a ready Prinect Signa Station job showing the job-specific sheet layout with the "Product Part in Reader's Spread" function in Prinect Signa Station. You can view the reader's spread on the monitor or send it to the Prinect Prepress Manager as a JDF layout to produce a sample copy and output it, for example, on a page proofer.
Reader's spread with the Interactive Prinect Signa Station:
In this case, you must start the interactive Prinect Signa Station with "Open as Copy" in order to preserve the existing layout.
You can right-click to trigger the output of the reader's spread with "Print Product Part".
Note: The reader's spread can also contain a collating mark. The collating marks will be set in the reader's spread according to their grouping in the source layout if the source layout contains collating marks. The folding sheets are "grouped" in the reader's spread so that only the outer pages bear a collating mark each.
To improve sorting of the proofed sheets there is the "PtR_ReadersFoldingGroup" replacement mark that indicates the folding sheet number, the collating group number and "Front" on the front side (see also Table of PtR Marks).
An 8up is thus turned into four 2ups in the reader's spread. In this case, only the outside sheet bears the collating mark and the individual pages are numbered consecutively 1,1 - 2,1 - 3,1 - 4,1 - 5,1 - 6,1 - 7,1 - 8,1, in each case followed by "Front". The second sheet does not bear a collating mark and the individual pages are consecutively numbered 1.2 -2.2 -3.2 -4.2 -5.2 -6.2 -7.2 -8.2, followed by "Front", etc.