Hi,

Yes possible to do it. Either from the code or you can do it from the front end. By default in the maintenance module, there is a group, ie, Equipment Manager, which comes under the Human Resource Category

For creating a new category and group, see below code,

<record model="ir.module.category" id="module_maintenance_management">
    <field name="name">Maintenance</field>
    <field name="sequence">12</field>
</record>

<record id="group_maintenance_user" model="res.groups">
    <field name="name">Maintenance User</field>
    <field name="implied_ids" eval="[(4, ref('base.group_user'))]"/>
    <field name="category_id" ref="module_maintenance_management"/>
</record>

<record id="group_maintenance_manager" model="res.groups">
    <field name="name">Maintenance Manager</field>
    <field name="category_id" ref="module_maintenance_management"/>
    <field name="implied_ids" eval="[(4, ref('group_maintenance_user'))]"/>
    <field name="users" eval="[(4, ref('base.user_root'))]"/>
</record>

Once you create the groups, you have to right the record rules and access rights accordingly.

Thanks