user_type = fields.Selection('user type',[('admin','Admi'),('manager','Manager'),('tl','TL'),('user','User')])

<record id="group_team_leader" model="res.groups">
        <field name="name">Team Leader</field>
        <field name="category_id" ref="module_category_csm"/>
        <field name="implied_ids" eval="[(4, ref('group_team_member'))]"/>
        <field name="comment">The team leader cannot create.</field>
    </record>

    <record id="group_userz" model="res.groups">
        <field name="name">Support</field>
        <field name="category_id" ref="module_category_csm"/>
        <field name="implied_ids" eval="[(4, ref('group_team_leader') )]"/>
        <field name="comment">The user will have access to all except read.</field>
    </record>

    <record id="group_managerz" model="res.groups">
        <field name="name">Manager</field>
        <field name="category_id" ref="module_category_csm"/>
        <field name="implied_ids" eval="[(4, ref('group_userz'))]"/>
        <field name="comment">The Manager will have an access to every option in the CSM application except configuration menu.</field>
    </record>

    <record id="group_admin" model="res.groups">
        <field name="name">Administrator</field>
        <field name="category_id" ref="module_category_csm"/>
        <field name="implied_ids" eval="[(4, ref('group_managerz'))]"/>
        <field name="comment">The Administartor will have an access to every option in the CSM application.</field>
        <field name="users" eval="[(4, ref('base.user_root'))]"/>
    </record>