I just use the 1099B worksheet, scroll down to the entry table. 

If a 1099S has been issued, you may want to make sure you use that figure for the sales price, so IRS can cross match it with the 1099S, then make any other adjustments to the basis to come up with the correct gain.   You can click the little notepaper icon next to the entry box for Cost basis to spread out the purchase price, expenses, etc...IRS doesn't see all that anyhow.