Netbackup snapshots in vcenter

Hello,

does netbackup create shapshots at the same time from all virtual machines in a policy?

Example: if there is 100 vms in given policy and policy starts at 6:00PM, then all 100 snapshots are created at the same time and then backup will write those images to disk regarding the policys 'Limit job per policy'.

Can I control the number of snapshots taken per policy in vcenter?

Thank you very much.

Cheers/sven