Hi there!
The Junior, Member, Senior Member, etc. designations are simply titles given to each person depending on their total number of posts on the forums. It's essentially a way to show who has been either 1) here the longest or 2) most active. Nothing more.
A moderator is just that-- someone who moderates one of the many forums.
Not all of us are members of Beta Sigma Phi-- most are, but there are a few of us (myself included) who are PNM's (Potential New Members) who are simply chatting with the active sisters, meeting folks who share the interest, etc.
Because everyone is not a member, you will want to keep comments about any surprise/secret parts of rituals quiet here. I'm not sure (yet) what Beta Sigma Phi has as secretive rituals-- but I could not, for example, discuss the degree rituals for pledges to Tau Beta Sigma because they are meant for sisters only.
Otherwise, welcome!
~ Melissa