Certainly JCGee, you would make a Preventive Maintenance order once, with settings so that a service workorder is generated from it every 6 months - see overview at http://www.ayanova.com/AyaNova7webHelp/what_do_i_use_a_preventive_mai.htm
You will need the Generator running so that the service workorder is generated - see http://www.ayanova.com/AyaNova7webHelp/generator_and_preventive_maint.htm
If any questions, let me know what configuration you have - stand-alone, network Firebird Server, SQL Express, etc
Also include copy of ayalog.txt file as will show me your configuration, your version, etc
What I recommend is that afer reviewing those links above, is that you follow along with the tutorial http://www.ayanova.com/AyaNova7webHelp/automatically_generate_a_servi.htm which will walk you through the steps and fields of a PM how to create to familiarize.
Any questions afterwards, let me know!