HI Veena,

You may restrict a button , field and other form contents with using the group attribute in that field/button, So only a provided group or groups may see or not see that field/button in the xml view of model, according to your provided condition in the xml code.

I am going to give you a sample example for this maybe it will help ... ""<button name="action_draft" states="done" string="Set to Draft" type="object" icon="gtk-convert" groups="account.group_account_manager"/> ""

here only the person or users belong to this group account_manager will have access to this button. Similarly you can go for your requirement. Hope it will help.