Dear jean ,

    you can install customization easily following these steps.

        1.First activate developer mode , It can be easily done by attaching ?debug to your

        local url immediatly after the

        http://localhost:8016/web like http://localhost:8016/web?debug

        2.Copy the customized modules into your addons folder you have specified in the conf file.

           

[options]
admin_passwd = admin
db_host = localhost
db_port = 5432
db_password = psql
db_user = nishadodoo11
xmlrpc_port = 8015
addons_path =/home/muhammednishad/odoo/odoo-11.0.post20180606/myaddons

   in my case it is :

/home/muhammednishad/odoo/odoo-11.0.post20180606/myaddons

        3.Now goto apps , on the right hand  side , you can see update apps list option , use it.

        4.Now on search , Clear default filters if any , Search your module by module name or

        the name you have given in the manifest.

                Hope it help