Multi Map - Volume + Track settings

(edit concerning volume)

Hi folks
Ive just been using the multi map mode (thanks to cuckoo’s help setting it up)
Ive set up a map of different bass and squelchy noises to be used as hits in a dubsteppy type groove

Ive recorded the hits into track 4

My questions are 1 how does tr4 parameters actually effect the multimap sounds , ie filters amp effect etc
they seem to be independant

Also 2, Volume, is the only way to change the multimap tracks volume by A changng velocity, or B editing and resaving each sound,
the Tr4 volume does not effect the multimap recorded on tr4

EDIT

The tr volume does effect the multimap overall volume, but i meant the individual trig locks of each hit,
i tried to lock the amp volume to trigs but it didnt work

Thx in advance