I want to create a sale.order from the event.booth.form via a button like this:

https://shottr.cc/s/GHmR/SCR-20220908-lxrp.png

When i click on the button I want a form to pop up, where i can select the partner and then it should create a sale.order with the booth selected as the product.

I'm not sure, how to do this, but this is my attempt:

record id="event_booth_registration_action" model="ir.actions.act_window">
        <field name="name">Select an event boothfield>
        <field name="res_model">event.booth.registrationfield>
        <field name="view_mode">formfield>
        <field name="target">newfield>

I am trying to open the form for the event_booth_registration

This is what the form I created looks like:

<record id="event_booth_registration_view_form" model="ir.ui.view">
    <field name="name">event.booth.registration.view.formfield>
    <field name="model">event.booth.registrationfield>
    <field name="arch" type="xml">
        <form>
            <group>
                <group>
                    <field name="partner_id" readonly="1"/>
                    <field name="event_booth_id" readonly="1"/>
                group>
                <group>
                    <field name="event_booth_registration_ids" options="{'no_create': True, 'no_open': True}" widget="many2many_checkboxes" domain="[('event_id', '=', event_id), ('event_booth_id.halle_id', '=', halle_id)]"/>
                    <field name="plan" widget="image"/>
                group>
            group>
            <footer>
                <button string="Fertig" class="btn-primary" special="save"/>
                <button string="Abbrechen" class="btn-secondary" special="cancel"/>
            footer>
        form>
    field>
record>

I added the "done" and "cancel" button, but i'm not sure how to create a sale order that has the booth as product when the user clicks "fertig" a.k.a. "done"

I have looked at other code and it seems like a js_class in the

What is the best way to achieve this?

Thank you for your help.