You can read how to create a coa here: Create a Sales order (COA) (rambase.net) 
Forward COA to CSA: Prepare for picking (PFP) (rambase.net)

It is possible to forward one document at a time.

A simple instruction would be:

Note that you might need to add shipping service and encounter error messages because of settings you might have in you company :)

This example is only valid when items are in stock.

Create a customer sales order (COA) and add items.
Register and send the sales order (COA) 
- This option can be found in the top right corner on the sales order (COA ) level (main level).

Nb! some items will need to be approved, this information is found on the sales order item level (COAITEM).

Select Forward all items to shipping advice (Can be found in the top right corner on sales order (COA) level) 

Forward to a new shipping advice or add to existing, and select Forward

The sales order (COA) goes to status 9 and a shipping advice (CSA) in status 1 is created. 
Select 'Activate and operations' in the top right corner and there you can select 'Add to picking queue'
Select priority and OK - the shipping advice (CSA) is forwarded to status 2.

Select 'Activate and operations' in the top right corner on the shipping advice (CSA) main level and select 
'Start picking'. The shipping advice (CSA) is forwarded to status 3.


Select 'Activate and operations' in the top right corner on the shipping advice (CSA) main level and select 
'Pick shipping advice', you are re-directed to the Pick application. Pick all and go back to the shipping advice (CSA) using 'escape'.

Once again Select 'Activate and operations' in the top right corner on the shipping advice (CSA) main level and select 'Ship shipping advice¨'. The CSA is registered to status 4, then to status 9 and an customer invoice (CIN) is created.