Manav: Has switched his pavitra rishta duties and therefore needs to take permission from Shravani for everything.
Archu: She's letting Manav get married to Shravani, because she is obeying her duties/pavitra rishta as his wife
Vinod: He doesn't say anything to Manju, because he needs to obey his pavitra rishta as her husband
Manohar Baba: He let Sulochana kick Deshmukhs out becuase he needs to obey his pavitra rishta . He also let sulochana drag Archu from the mandap.
Damodar baba: He silently watches savita yell at archu because he is obeying his pavitra rishta of supporting his wife.
Savita aai: She went to Vershu's engagement cause her husband wanted her to thus obeying her pavitra rishta
Sulochana aai: She gave permission for Vinod to move because her husband told her to.
So basically this whole "pavitra rishta" is standing in the way of people's happiness. 😉