You can visualise and configure the spatial setup for each source individually by selecting the relevant source tab. By default, there will be just one pointing at the source coordinates specified earlier. Offset pointings can be added, edited and deleted directly in the 'Field Center Coordinates' pane, or interactively in the spatial editor (see boxed text). The Import button will read offset pointings for a given source from an ASCII file in simple RA, DEC format. You can also Export pointings, e.g. to be used for simulations, in different coordinate formats.
You can choose to process the pointings as a single image by ticking the Custom Mosaic box. In this case, the pointings must overlap. If the box is not ticked, each pointing will be processed separately. If ACA observations are requested (Step 3.8) these will have the same pointing centres as the 12-m pointings; any custom-defined mosaic will not be adjusted for the larger primary beam size of the 7-m antennas. Also, the sensitivity specified in Step 3.8 is assumed to be per pointing and the estimate entered should take into account any overlap.