Need to install more than one filter to some function driver? Not a problem.
Just use the following AddReg section:
[FiltersInstall_AddReg]
HKR,, "LowerFilters", theLowestDriver, theNextDriver, theUpperDriver
Drivers stack will be like the following:
[FUNCTION]
[theUpperDriver]
[theNextDriver]
[theLowestDriver]
Need to install upper filter? no problem. Just replace lowerfilters with upperfilters
P.S. Don't forget about all needed INF-sections for filters you install