URGENT:Valuvation of wage type on slab with respect to attendance.

Hi,

My client needs a wage type to be paid on number of present days,

HERE :

Wagetype= X

PD = P + PH + CL + PL +SL Allowance / CD *CD

&

Present days =P

Public Holiday =PH

Casual Leave =CL

Paid Leave = PL

Sick Leave=SL

if so the calculation should happen as follows

Wagetype Attednace Payment of WT

X If PD>=20 100%

If PD>19 & <20 90%

If PD>18 & <19 80 %

If PD>17 & <18 70 %

If PD>13 & <17 50 %

If PD <=12 0 %

Is it possibvle to configure by Processing class and Evaluvation class or we need to write PCR,

Please guide me I don't know steps to write the PCR's,

Thanks in Advance, write answer will be rewarded,

Paramshetty