Is this a continuous supply - event management contracted in

Please would someone give their opinion on this: I would like to know whether request for payment can be used (and how the 14 day rule affects this) to ensure more desired VAT timing of amounts due.

The VAT arises from offering the following service:

A team of event managers, who bill on time, equipment etc are contracted in on site. The contract period is for 1 year, subject to two months notice for cancellation/ breach etc.

Payment terms are 60 days.

Does this count as a continuous supply?  If so can we use request for payment, and is there any time limit on this? eg 14 days? For example one line item on an invoice may be a x piece of equipment hired on x date.

Of course there is also the option of cash accounting scheme.