You could tell her/him about all the advantages over your current system for managing shared passwords: its better security and organization, the improvements in productivity and that you'll never lose a password again with it. You could also tell her/him that Team Password Manager has an affordable one-time price. But ...
The best way to convince your boss is showing instead of telling
So, go download Team Password Manager, install it and test it with coworker and a handful of projects. You can use the free version of Team Password Manager with 2 users and 5 projects or you can request a 30 days trial license without these limitations. After a while, show your boss how good is Team Password Manager for your company!
