Allow "Other" option
When the Allow "Other" Option is clicked the following options will appear. If Not Allowed is clicked then there will be no option to choose Other. If Allowed is chosen then you are able to choose Other and if Allowed with Explanation is picked then you are able to click Other from the list but you will be required to enter an explanation.
You can select options from your own list or from a lookup within TM3. To set these up you toggle between list and lookup. If you click on list then you are able to free type in your own value and then click the plus button to add more which you can see in the image below.
If you click on lookup then the TM3 lookup list which is set up under custom lists in configuration settings appears which you can see in the following image.
When the Create Flag option is turned on you are presented with the screen below. You can choose when value 'is' or when value 'isn't'. Values are populated based on the list you have created yourself or based on the lookup value you have chosen. In the image below body sites are appearing because I chose Bodysites from the lookup list.
You then select the flag that you want to be triggered when the option is selected.