rma/product_warranty/security/ir.model.access.csv

1	id	name	model_id	group_id	perm_read	perm_write	perm_create	perm_unlink
2	access_return_instruction_user	return.instruction.user	return.instruction	Sales / User	True	True	True
3	access_return_instruction_manager	return.instruction.manager	return.instruction	Sales / Manager	True	True	True	True