Translation of Gepäckausgabe

After next week, I will tutor the Mr. Zillmay from the language lab in Los Angeles, he is currently in the states. The lesson will take place in LA, but it may be held no earlier than mid-February.
Maybe we would need to say install our dictionary as a software? But I would say instead of install, use our dictionary as a software. So bottom line. If I use the singular form for newsletters and websites, I am on the safe side for both?
I sell clothes for children, women and men. I love my work. By the way: In Germany it is very cold, minus 15. We seem to be friends for years but have known each other just for two weeks.