Multiple or collective plural is used when the object of a sentence is treated as a single group. This kind of plural is realized by an arc movement:
date christmas ix1 all family book++ [contra]give-present[ipsi].
‘For Christmas, I will give books to my whole family.’
(based on Quer et al., 2005)
In the example above the verb moves from the location of the signer in a straight line towards a location on the contralateral side of the signing space and then it moves in a continuous arc movement towards a location on the ipsilateral side of the signing space.