I want to add quantity(area in sqm or no.s)

In Spider Project this field is called Activity Volume. Volume is a standard field and entering activity Volume and assigned resource productivities you don't need to enter activity duration - it is calculated by the software.

You may define material requirements per unit of volume, unit costs, resource assignment costs depending on volumes performed, etc.

In other softwares you shall use UDF as Mike proposed.

Hi Vineet,

What mike has written above holds true. Further if you can send me snapshot of the schedul of questioned area i shall be able to answer it

Hi Vineeth

You can set up user defined columns for this data or place the information on your resource modelling section.

Best  regards

Mike Testro