Preventive Maintenance Schedule

hello

We have Preventative maintenance activities on machines to be performed as following:-

SET   A  After   15 Days  

SET  B   After   60 Days   

SET  C  After 172 Days   

SET D   After 365 Days  

Activities performed during SET A needs to include in SET B+ other activities  and set C includes SET B + more activities and SET D will also include SET C + other activities.

How can I  define preventive maintenance schedule once for a machine and later on I can have Work orders generated required frequencies as mentioned above.

Thanks

Gobind Ahuja