How to Separate 1 item into 2 items

How to Separate 1 item into 2 items

Hello, 

We purchased an item - a "Flashlighs with an Holster". 

We need to invoice that 1 item as 2 separate items like below:
1. Flashlight
2. Holster for Flashlight. 

How we can do this in Zoho books? So we basically need to do something like opposite of "composite item" in Zoho Inventory.