All varies widely by BES.

3-C-1-b covers MPG increase (not add pay) for unused short call/FSB

3-A-3 covers blended rate for all non-flying segment hours

Short version:
In base reserves want SC and VDO assignments for more money. Commuters want aggressive pickup of commuteable trips/FSB for more time at home.

Not a personal criticism, but the general lack of knowledge of reserve rules demonstrates that there is 1) a need to improve them, and 2) no way improvements will ever pass.