Be warned this is fine for all days except Thursday which inserts an extra 
incremental or level 5 after the clocks go forward.
This has been reported as a bug without a resonable reponse from EMC.

On Tue, 13 Jan 2009 10:42:53 -0000, Jóhannes Karl Karlsson 
<johannes.karlsson AT SKYRR DOT IS> wrote:

>If you put in override this statement:
>
>Full Every Two Weeks Friday
>
>It will give you desired results. You can change the day to Monday or any 
other if that is what you want by replacing "Friday".
>_________________________________________
>
>Jóhannes Karl Karlsson
>Datacenter Operations
>Skýrr
>
>johannes.karlsson AT skyrr DOT is
>+354 822 9373
>+354 569 5115
>http://www.skyrr.is
>_________________________________________
>
>
>http://www.skyrr.is/legal/disclaimer.txt
>
>
>
>-----Original Message-----
>From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] 
>On 
Behalf Of Davina Treiber
>Sent: 13. janúar 2009 10:22
>To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
>Subject: Re: [Networker] Create schedule of full every other week
>
>Tim Mooney wrote:
>
>> Set up the base schedule however you want, then in overrides you
>> want something like
>>
>>     full first friday every month
>>     full third friday every month
>
>This will not work exactly as requested. This will backup 24 times a
>year, rather than the 26 times that is expected. When a month has 5
>Fridays in it, the last Friday will be missed, and there will be a 3
>week gap.
>
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