quick question about mixers

[JSplifz]

I have a bit of a problem.. I'm looking for a mixer that has multiple outputs for the master. What I'm trying to do is have one master playing in different rooms at different volumes. Idk if there's a mixer that can do this or if I use an amp to adjust the volume outputing to the different speakers. Somebody help lol. Thank you

[cartesia]

pretty much every mixer has at least a master out + 'tape' or 'monitor' out.. Sometimes you can only adjust the volume of the master and not the tape, but u can still set it by setting the channel volumes then alter the one that can be altered to be louder/quieter/whichever