A user can define and name tolerances, each having a set of (4) thresholds, that can be activated and deactivated, regardless of one another.
There are four separate thresholds: high absolute threshold, low absolute threshold, high relative threshold and low relative threshold. Disabling a threshold will pass the respective check automatically, always.
You can assign multiple tolerances to a single workflow setting, as long as they don’t share the same currencies. See also: Personalize your business flow using the workflow settings | Matching