Multiple life insurance plans that need to share the same cap

We have 1x's your sal the company pays at a flat rate, then you can opt for 2x's your sal at the low fixed rate, or 3x's your salary which will use the age/rate table or 4x's your sal using the age rate table. All 4 tiers need to use an overall cap of 800k. Any one trying to do something similar? how can we set this up to share the same max?