<record id="planned_task_line_tree" model="ir.ui.view">
        <field name="name">planned.task.line.tree</field>
        <field name="model">planned.task.line</field>
        <field name="type">tree</field>
        <field name="arch" type="xml">
            <tree string="Planned Task Line">
                <field name="name"/>
                <field name="product_id" on_change="onchange(product_id)"/>
                <field name="uom_id"/>
                <field name="planned_qty"/>
                <field name="project_weight" />
                <field name="actual_weight" />
                <field name="completion" on_change="onchange_validation(completion)" invisible="1"/>
                <field name="prev_task_completion" invisible="1" />
                <field name="diff_task_completion" invisible="1" />
            </tree>
        </field>
    </record>




    <record model="ir.actions.act_window" id="act_open_planned_task_line">
       <field name="name">Planned Task Line</field>
       <field name="res_model">planned.task.line</field>
       <field name="view_type">form</field> 
       <field name="view_id" ref="planned_task_line_tree"/>
       <field name="context">{ 'tree_view_ref':'planned_task_line_tree'}</field>    
       <field name="view_mode">tree,form</field> 
    </record> 

    <menuitem action="act_open_planned_task_line" id="planned_task_line" name="Planned Task Line" parent="base.plannedtask" sequence="2"/>



  <record id="planned_task_line_tree2" model="ir.ui.view">
        <field name="name">planned.task.line.tree2</field>
        <field name="model">planned.task.line</field>
        <field name="type">tree</field>
        <field name="arch" type="xml">
            <tree string="Planned Task Line">
                <field name="g_project_id"/>
                <field name="g_task_id"/>
                <field name="group_activity_id"/>
                 <field name="activities_id" />
                <field name="product_id" />

            </tree>
        </field>
    </record>

<record model="ir.actions.act_window" id="act_open_planned_task_line2">
       <field name="name">Planned Task Line Group</field>
       <field name="res_model">planned.task.line</field>
       <field name="view_type">form</field>  
       <field name="view_mode">tree,form</field>    
       <field name="view_id" ref="planned_task_line_tree2"/>
       <field name="context">{ 'tree_view_ref':'planned_task_line_tree2'}</field>
       </record> 

    <menuitem action="act_open_planned_task_line2" id="planned_task_line2" name="BOQ Acitivity Groups" parent="base.plannedtask" sequence="4"/>

here is my example of 2 tree views for the same clas.. hope it will help :D

Create a Split action for your object like this create a tree view and action for that tree view and write split view for tree as mentioned below

<record id="tree_id" model="ir.actions.act_window.view"> <field eval="3" name="sequence"/> <field name="view_mode">tree</field> <field name="view_id" ref="tree_view_id"/> <field name="act_window_id" ref="action_id"/> </record>

and if you want another tree view create new tree view and action for that tree view and create split action for newly created action like this

<record id="tree_id1" model="ir.actions.act_window.view"> <field eval="3" name="sequence"/> <field name="view_mode">tree</field> <field name="view_id" ref="tree_view_id1"/> <field name="act_window_id" ref="action_id1"/> </record>

Problem Statement

First of all you may know the problem that what's the problem that we are facing here. For example we have a model "model.A" and we have also a tree and form view associated with that model (model.A). And we have one menu named "menuA", and this menu is visible to the only one group of users such as "Staff". When any user related to staff group will click on "menuA" than our above created form and tree view will be displayed to the cited user. And for that group of users we need that all the fields should be editable mode. That's working fine. Now the problem is what we have do when we have different group of users, and for that users we need to show some fields in readonly mode.

Solution

To do that we have different solutions but here we are going to resolve this issue by splitting action window. First we will create a new form and tree view which we want to show different group of users, than we will create an action window using "ir.actions.act_window" model. If you want to read more about action window read this article Action Window in Odoo.

 <record model="ir.actions.act_window" id="parent_action_window">
     <field name="name">Parent Action Window</field>
     <field name="res_model">model.A</field>
     <field name="view_type">form</field>
     <field name="view_mode">tree,form</field>
 </record>

 <record id="child_action_window_tree" model="ir.actions.act_window.view">
 <field name="view_mode">tree</field>
 <field name="view_id" ref="newly_created_tree_view_id_goes_here" />
 <field name="act_window_id" ref="parent_action_window" />
    </record>

 <record id="child_action_window_form" model="ir.actions.act_window.view">
 <field name="view_mode">form</field>
 <field name="view_id" ref="newly_created_form_view_id_goes_here" />
 <field name="act_window_id" ref="parent_action_window" />
    </record>

To get more details read : http://learnopenerp.blogspot.com/2017/12/display-multiple-form-and-tree-view-for.html