My client did a small amount of crypto trading during the year. It was less than $600, not enough to trigger a 1099-B issuance from the provider. Without the 1099-B, how do I report the sale on form 8949? I can't type directly onto form 8949 without overriding; I have to link to another form which flows through to 8949, but obviously there is no other form in this case. Any assistance would be appreciated.