Offset[in] Refers to the Point object which describes the location of a point on an image.PageIndex[in] Specifies the index of the original page for which the picture position should be set. By default, this variable is set to -1, which means that the picture position will be set on all document pages. If you need to specify the pictures positions on certain pages, you should list the indexes of the desired pages, for example, (1, 3, 6, 7).