Assuming you want to backup your files from Monday to Friday as incremental backup at 20:00 hours and a full backup on Saturday at 14:00 hours and the first full backup of the month will be the monthly backup for the past month here´s how you can configure it w/o changing anything after this adjustment.

Create a file level backup job for all your systems as you want to but leave the schedule unconfigured. Name them e.g. Daily, Weekly, Monthly and Yearly so that you´ll be able to distinguish your different jobs.

There´s an easy way to achive this by creating one job and copy this job afterwards.

The config files for the Schedules are in following folders:

from Windows 2008 on:
%ProgramData%\OmniBack\Config\server\Schedules or %ProgramData%\OmniBack\Config\server\Barschedules

Previous Windows systems:
Data_Protector_home\Config\server\Schedules or Data_Protector_home\Config\server\Barschedules

Linux:
etc/opt/omni/server/schedules or /etc/opt/omni/server/barschedules

Daily

-holidays on
-incr -protection -weeks 1 
-every
	-day Mon Tue Wed Thu Fri
	-at 20:00

Weekly

-full -protection -weeks 4 
-every
	-day Sat 
	-at 14:00

-full 
-exclude
	-day 1 2 3 4 5 6 7 
	-at 14:00

Monthly

-full -protection -weeks 52 
-every
        -day 1 2 3 4 5 6 7
        -at 14:00
-full
-exclude
        -day Mon Tue Wed Thu Fri Sun
        -at 14:00

-full
-exclude
        -day 1 2 3 4 5 6 7 -month Jan
        -at 14:00

Yearly

-full -protection -permanent 
-every
        -day 1 2 3 4 5 6 7 -month Jan
        -at 14:00
-full
-exclude
        -day Mon Tue Wed Thu Fri Sun
        -at 14:00

But there´s also the possibility to configure your backup job as one if you want to.

-holidays on
-incr -protection -weeks 1 
-every
	-day Mon Tue Wed Thu Fri
	-at 20:00

-full -protection -weeks 4 
-every
	-day Sat
	-at 14:00

-full
-exclude
	-day 1 2 3 4 5 6 7 
	-at 14:00

-full -protection -weeks 52
-every
        -day 1 2 3 4 5 6 7
        -at 14:00

-full
-exclude
        -day Mon Tue Wed Thu Fri Sun
        -at 14:00

-full
-exclude
	-day 1 2 3 4 5 6 7 -month Jan 
	-at 14:00

-full -protection -permanent
-every
        -day 1 2 3 4 5 6 7 -month Jan
        -at 14:00

-full
-exclude
        -day Mon Tue Wed Thu Fri Sun
        -at 14:00