The first two control features Rows and Columns determine the overall imposition layout by setting the number of rows and columns. The calculate automatically option chooses optimal values to fill the sheet maximally. Automatic positions filling is also activated when activating the automatic number calculation. This option cannot be used when working with a booklet imposition and also if the sheet size is calculated automatically (Activating 'Calculate automatically' activates manual sheet size input). If there are many positions on the sheet the automatic calculation can be time-consuming.
In the next group of options you can select a One-sided or a Two-sided sheet. If you choose to work with a two-sided sheet two mirrored pages of the page will be made.
The following four options let you choose imposition type - N-UP, Cut & Stack, Booklet and Calendar.
Note: Visually, nothing has to change while switching to booklet imposition, but the option Page order from beginning/end in the 'Info' palette becomes available, which is necessary to define the scheme of assignment for this imposition type. It is recommended to use Automatic positions filling enabled for booklet imposition
You can read more about these imposition types here. Red warning will be displayed for a booklet imposition if the number of positions is unsuitable for auto positions filling. If auto filling is disabled the warning will be orange.
Note: The following features are hidden in Auto mode, where they are always enabled.
Automatic positions size - Calculates size of positions according to pages for imposition.
Automatic positions filling - Fills the sheet with pages from left to right and from top down. Automatic filling depends on the number of positions for booklet impositions.
Bind front and back side - Enabling this option makes sure that when placing a page to the front side a page for its back side will be placed accordingly (and vice versa).
Further sheets automatically - This option is usually enabled. When it is turned off only the first sheet of an imposition will be made and the remaining pages will not be imposed.