User rights inheritance

Hi There,

I’m wondering if anyone can point me to the right place for docs or make suggestions.

I need to do a tiered access with user, for different categories of members.

Non-profile, has a board, executive, chairpersons, team leads and regular members.

I need to have the follow structure, but I’m just not seeing how I would set this up in e107? The second part is,

Secretary (and all below)

Executive (and all below)

Board (and all below)

Chairs (and All Below)

Team Leads (and all below)