My stepson is getting married next month. I was wondering how the seating should be for myself ( stepmom) and my husband ( father of groom ) and grooms mother and her lady friend. The bride has asked that the grooms mother's friend not sit in the front of the church nor at the parents table at the reception. I am not really sure how this works. Where do we sit and where does the grooms mom sit and her friend. I have said that if this will cause a problem with grooms mom that I am sitting in front of the church and at the parents table and her lady friend is not I could sit some where else also. What do we do if there is trouble?

Not sure what you mean by "the parent's table" at the reception. Are you planning one table with just the two sets of parents, and no other friends? One way to do this is to have one table for the parents of the bride and their close relatives/friends, and another for the parents of the groom and their close relatives/friends. Depending on table size you could have 6-8 non-family friends at each one. That way the groom's mother's friend is just another person at that table. Is that a problem? As for the church - I would sit the parents & step parents in the front row, and any close personal friends in the row behind.

What do you mean by "lady friend"? Is this woman his mother's girlfriend? Or is it a friend of his mother?

I don't know how you could do that, but me personally, I would not appreciate being shoved to the side so my stepsons mother could sit with my husband when he gets married. When he DOES get married, I'll expect that my husband and I sit together as well as my stepsons mother and her date, partner, husband, boyfriend, whatever she has by then. You're a mother figure in your stepsons life too and should be held equal as the other parents for such an important day.