We have quite a confusing system, and all three levels (Grand, Provincial, and Lodge) are separate.In Sweden the bylaws state that a grand officer (XI degree) can hold office in an ordinary lodge but can not be subordinate to anyone who isn't grand officer. In practice that makes WM the only available office (we don't have progression lines and you can hold a chair for longer time).
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It is because you can have three ranks in the same time theoretically, but most brethren just use their highest level.
For example in one of my lodges, a senior brother is a Past Junior Grand Deacon (PJGD) in the Grand Level, and Past Provincial Senior Grand Warden (PPrSGD), Past Master and Lodge Mentor in my lodge.
In the Grand Level, He is more senior than one of our AProvGM for higher rank, but he is outranked by that APGM within the Province. He is more senior than the WM in both the Grand and Provincial Levels because Masters of Lodges are the lowest rank in the order of precedence but the WM is the highest rank within the lodge and he rule the lodge...
such a confusing system...