Maintenance Plan - Multiple Frequencies

Hey,

I need to create a Maintenance Plan with multiple items and multiple frequencies. Is this possible ie.

1 x Maintenance Plan

2 x Items

Item 1 - 2months

Item 2 - 6monhths.

What I want is for the 2 monthly to come out twice and then when the 6 monthly is due, I want to suppress the 2 monthly Item.

How do I do this???

Grateful for any assistance.

Cheers,

Liz