Hello Muhammad Zaeem Mohzar, 

    Here’s how you can set it up:

    1) Create Record Rules :

    For Tasks:

    Go to Settings > Technical > Security > Record Rules.

    Create a new record rule for the project.task model:

        Name: Tasks assigned to user

        Object: project.task

        Domain: [('user_id', '=', user.id)]

        Apply for: (select the relevant user group, e.g., Employees or a custom group)

        Perms Read: Checked

        Perms Write: Unchecked

        Perms Create: Unchecked

        Perms Unlink: Unchecked

    For Projects:

    Go to Settings > Technical > Security > Record Rules.

    Create a new record rule for the project.project model:

        Name: Projects assigned to user

        Object: project.project

        Domain: [('user_id', '=', user.id)]

        Apply for: (select the relevant user group, e.g., Employees or a custom group)

        Perms Read: Checked

        Perms Write: Unchecked

        Perms Create: Unchecked

        Perms Unlink: Unchecked

    2) Create Access Control Lists (ACLs)

    define what operations a user can perform on a particular model. 

    You can set up ACLs to restrict users from editing or deleting tasks.

    Go to Settings > Technical > Security > Access Control Lists.

    Create a new ACL for the project.task model:

        Name: Task - Read Only

        Object: project.task

        Group: (select the relevant user group, e.g., Employees or a custom group)

        Read Access: Checked

        Write Access: Unchecked

        Create Access: Unchecked

        Delete Access: Unchecked

    3) Assign Users to Groups

       Make sure the users are assigned to the correct groups that have the appropriate record rules and ACLs applied.

    Hope this helps.

    If you need any help in customization feel free to contact us.

Thanks & Regards,

Email:  odoo@aktivsoftware.com           

Skype: kalpeshmaheshwari