knowledge/attachment_lock/security/ir.model.access.csv

1	id	name	model_id:id	group_id:id	perm_read	perm_write	perm_create	perm_unlink
2	access_ir_attachment_lock_all	access_ir_attachment_lock	model_ir_attachment_lock		1	0	0	0
3	access_ir_attachment_lock	access_ir_attachment_lock	model_ir_attachment_lock	group_attachment_lock	1	1	1	1