need help on multi effects.

[Dong]

hey, thanks for looking.

i would like to know what a compressor isolator does.
i am using a zoom 707 2. i rarely use anything other then drive, reverb and modulation.

i would like to learn more bout programming the compressor, isolator, eq and stack.

and if i were to plug into a stack, would the eq be diff?
eg. on my effects and the head.

"zoom 707 " - I regret buying mine :/ Its been under my desk unused for about 5 months now....