What happens for resource with charge type as Manual in Automatically transacted operation

Summary:

What happens for resource with charge type as Manual in Automatically transacted operation?

Content (required):

I have created WO with 4 operations... Operation 10 & 30 has Resources with charge type as Automatic and Operation 20 and 40 has Resources with charge type as Manual...Only Operation 40 is count point operation...

While executing the Work Order, The Resources with Charge type as Automatic are available in Autotransact Resources section in Operation 40...Whereas the Resource associated with OP 40 is available in Resource transaction section to charge manually...

I need to understand how to charge the Resource that is mapped to Operation 20 because the Operation is automatically transact type and not available for execution...