You can inherit res.config.settings model and create all the configurations you want.

Example: 

class ResConfigSettings(models.TransientModel):

    _inherit = ["res.config.settings"]

    max_product_registries = fields.Integer(

        string="Max Product Registries",

        default=5000,

        help="Maximum number of product registries to be updated at once.",

        config_parameter="your_module.max_product_registries",

    )

    product_manufacturer_update = fields.Boolean(

        string="Auto-Update Product Manufacturer",

        default=True,

        help="Choose if the products need to be updated with the manufacturer information automatically with the cron action.",

        config_parameter="your_module.product_manufacturer_update",

    )