I thought there was a question or checkbox or something that asked about it. You may want to go through the questions for the assets again to see if you can find it.
If you can't find it, when it asks you for the category of the asset (office furniture, tools, etc.) , you can select 'other' (or whatever it is called), the 'other' again. Then it should let you manually select the criteria, including Mid-Quarter convention in the 4th quarter.
Another option is using the "Forms" mode in the desktop version. Find the "Asset Entry Wks" for that asset, then scroll WAY down to the bottom. There should be a line that says "MACRS Convention" and probably says "HY", which you would need to change to "MQ".
