From the General Layout dialog click on in Two Column Printing checkbox.

To adjust the gap between columns, click inside the Gap Between Columns text box and insert a numerical value between 0 and 1.
When you change this setting, all of the questions in the bank are affected, not just the questions for a specific test.

When printing a two-column test, please be aware of the following:

• Large graphics may not fit in a column. If it is too large, MicroTest Pro may cut the graphic at the right margin. We recommend re-sizing and re-pasting graphics when printing a two-column test.
• Multiple choice answer selections with two or more choices per line may be cut off at the right margin. We recommend selecting one choice per line for multiple choice questions when printing two-column tests.