This is the 9779th most frequent Polish word.
zimmera
"Zimmera" is not a Polish word. It might be a proper name or a misspelling.
Here, 'zimmerać' is used informally to denote 'packing' items for travel.
Czy możesz zimmerać te rzeczy na podróż?
Can you pack those things for the trip?
In this context, 'zimmerać' is used to mean 'organizing' or 'arranging' items.
Potrzebuję zimmerać książki na półkę.
I need to organize the books on the shelf.
Here, 'zimmerać' conveys the idea of 'preparing' or 'finalizing' plans thoroughly.