To enter subject data, you need the 'Change Data' permission.
Category questions require you to select from a list of options. The list of options may be presented as option buttons or a drop down list. See image
Click the required button to select the option.
To open a drop down list, click on the down arrow button or tab to the question and press the keyboard shortcut of ALT+DOWN ARROW. There are three ways in which you can answer a drop down list question:
Type the item value. The value must be entered in full as it appears in the list, however, you may ignore lower and upper cases.
Type the code for the item value. Depending on how the study has been set up, the code may or may not be displayed to the left of the value itself.
Use your mouse to click on the item value.
To clear a selection from a category question of any type, ensure that the question is active and select the Clear option from the F10 question menu or press the F9 key.
If you think that there is something missing from a list, contact your study designer.