Need to amend my 2015 return. Have corrected 1099B. How can I do this on-line?

Situation traces to Kraft Foods-Heinz merger. Custodian Wells-Fargo issued the original 1099B with cost basis data. (Situation rather complicated because my Kraft holdings were held in a DRIP, creating both long-term and short-term purchases. (I have DRIP re-investment data in Quicken.)

After I had filed my 2015 return, WFC issued a corrected 1099 with adjusted cost basis data. Total amount isn't large, about $4500.

WFC advises consulting my tax advisor, proceeding accordingly.

All comments advice sincerely  appreciated.

Jim Butcher