Netbackup job's Duplication can be scheduled by hours?

Hi People

We are using NBU 7.5 with linux master, with differents clients.

Netbackup is the tool for the duplications the backups between the sites.

I need to know is there a way for schedule (in night hours) the duplications job's?

If the answers is yes, How can I do that?

Thanks for your help.

Regards