Number Range for Maintenance Order Type

Dear All,

Please help me in regarding for Number range Change in Maintenance Order Type.

I have different types of maintenance order...such as PM01,PM02, PM03, PM04, PM05, PM06, PM07, PM08.

and i have to assign number range different for all the maintenance order type. kindly help how can i assign the same separately.

also in case of Notification types also.

Early response is highly appreciated.

Thanks

Sushant