1.an untidy desk: a messy desk? It has nothing to do with business English. . .
2. video conferencing: video conferencing
3. post-it notes: post-it is the brand name of sticky notes, which are the kind of sticky notes that can be posted
4.an in-out tray: in-out refers to the input and output of the computer system. I am not sure if it is connected to the tray.
5.a detailed filing system: (disk) fragments Organizing the system?
6.high-tech gadgets: high-tech devices
7.being punctual: punctual and accurate
8.paperless filing: paperless transmission of information (or data) file
9.a messy bag: a messy bag? I really don’t know this. . . However, messy code refers to garbled characters, is this relevant?