Hi Sindhu,
You can highlight fields/columns using parameter using calculated fields.
1. Create a parameter (for suppose i'm taking profit cut off for a given month before the month ends, so i have to highlight all days with profit greater than the cut off )
2. I'm highlighting the group with days greater than the cut off for the month.
3. Create a parameter for taking cut off. (Cut-off)
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4. Create a calculated field for highlighting the fields that satisfy the parameter.
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5. Once the field is created then drag the calculated field to color shelf or select show highlighter to show highlighted columns.
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Hope this helps you.