Question about Gnucash tutorial

[Tim T.]

Hi,

 I'm working through the GnuCash tutorial (for Gnucash 2.2.6, Ubuntu),
and I'm stumbling on the Split Transaction in 4.2.2.

 Basically, I can't enter it as shown.

 What I can do, following the instructions:
  - Select the line, press split
  - Enter the Employer's are us
  - Enter the federal Tax ( entering 180 in the Deposit column)

 And then I run out of lines ;-)

  Pressing return or tab moves the amount of 180 to the Withdrawal
column, with an Account "Imbalance".

- What am I doing wrong ? How do I get more lines to input my split ?
 (Or is the tutorial outdated ? )

Thanks,
 TimT.