server-backend/base_ical/security/ir.model.access.csv

1	id	name	model_id:id	group_id:id	perm_read	perm_write	perm_create	perm_unlink
2	access_base_ical	access_base_ical	model_base_ical	base.group_user	1	0	0	0
3	modify_base_ical	modify_base_ical	model_base_ical	base.group_system	1	1	1	1
4	modify_base_ical_token	modify_base_ical_token	model_base_ical_token	base.group_user	1	1	1	1