[Avodah] Standing for Parshas Zachor

[Cantor Wolberg]

Reb Shrink wrote: I believe the default position for the performance  
of all Mitzvot D'orayta or D'rabbanim is to stand, unless there is a  
reason to sit.??

Not always.  If you are sitting when you come to the krias Sh'ma, you  
must remain seated.
You sit for the Seder.
You sit for tachanun.

Kol tuv.
ri