Imposition scheme determines the assignment of pages to certain positions of your imposition. The scheme cannot be created while using Auto mode where it is only possible to use pre-made schemes and their automatic creation. At first it is necessary to choose between a one-sided and a two-sided imposition (See Imposition types). Then you must decide whether you want a standard N-UP imposition (where pages are placed on sheets in the same order as in the source PDF) or a booklet (where pages are placed on sheets from the beginning and from the end of the source PDF). If you want to create a Cut & Stack imposition the easiest way to do it is to select a standard N-Up imposition and after the order of position filling is made switch to Cut&Stack mode.
It is useful to take a look if the Imposition presets palette contains a scheme you need or at least a similar one. It is usually faster to use a pre-made scheme (and for example duplicate certain sheets or positions) than starting from scratch. It is also possible to use the automatic position filling which fills positions with pages according to common schemes.
Then it is necessary to set the row/column count and with that the total amount of position on the sheet.
It is important to disable page repetition when creating the scheme. If it were enabled position for page nr.2 would be filled with page nr.1 making orientation difficult.
The easiest and most intuitive way of assigning pages to positions is to impose specific pages on your sheet. In order to do that, you must first load a PDF for imposition into Pages for imposition, unless you already imported a PDF from Acrobat. Then you can simply drag pages from the Pages for imposition palette to their specific positions. If there are more pages for imposition that positions on a single sheet, more sheets will be created automatically. When the scheme is created this way the imposition adjusts itself after each drag and drop so it may appear that things went wrong. It is, however, necessary to place all pages in order to evaluate the result. Start assigning pages to their positions on the first page and move further from there to get a better orientation in your imposition.
If you are preparing a booklet imposition, you need to drag pages from the beginning of your PDF first and then from the end of your PDF accordingly. This would mean first placing page nr.1 and then page nr.8 in the example shown below. It is useful to have the same amount of pages for imposition and positions on your sheet so that the pages fill the whole imposition. This can be done for example by placing blank pages at the end of your imposition (Pages palette -> Insert blank page). If the amount of pages is lower than needed Montax will automatically leave the remaining positions blank. This makes orientation bit more difficult because pages can be placed to previous positions while dragging them from the end of the imposition.
Example: Booklet, two-sided sheet, amount of rows: 1, amount of columns: 2 - the sheet contains two positions next to each other with one pages from the beginning and one page from the end of the imposition. If you want to impose 7 pages the result will be two sheets with 4 positions on each of them. However, the last position will be left empty. If you now drag a page for imposition to position 1 and then you place the last page (page nr.7) on the position next to it, page 7 will actually be placed on the position for the second-to last page and the last position will remain blank. This can be a little confusing in the beginning but the imposition will be correct. This is why it is useful to have the correct amount of pages for imposition, where the last page will be on the last position. (Assuming front and back side binding in this example)
Note: If you have less pages than you need but you really want to have the last page on the last position you must place and empty position between the pages for imposition exactly where you want it, which will result in having a blank page somewhere within your printed matter.
The scheme can also be created without specific pages for imposition. After selecting a position you can select page order in the Info palette to assign a specific page number to the position and if you are using a booklet imposition also whether it is the page number from the beginning or from the end of the imposition. Where the first page from the end will actually be the last page of the PDF, the second from the end will be the second to last and so on - naturally. This process may not be as intuitive as the previous one but you do not need to worry about the correct page amount, because the imposition will work with any amount of pages correctly, leaving blank positions at the end if there are not enough pages.
Groups of sheets and Cut & Stack imposition type should both be activated after setting the scheme where the order of position filling is set for a sheet and will not be affected by these options because these options affect the order of sheets, not positions or pages. Page repetition should also be activated after the scheme is made.
Other imposition parameters such as margins, gaps, bleed and marks can be set according your needs after the scheme is made.