Hi,

if you want to restrict the group of users to see the other employee records, ie limit the user to see only his record, you can use record rules.

<record id="hr_personal_rule" model="ir.rule">
    <field name="name">Employee</field> 
    <field ref="hr.model_hr_employee" name="model_id"/>
    <field name="domain_force">[('user_id','=',user.id)]</field>   
    <field name="groups" eval="[(4, ref('your_group_name'))]"/>
</record>

If you want to show some fields in employee records to only a particular group of users, you can use the group attribute along with that field.

<field name="location_id" groups="your_group_name"/>

Then this field will be only visible for the users in this group.

Thanks