Open the console
Give the console the name of your organisation and your work email, then type the six-digit code that arrives. That address becomes the administrator.
A trial is the whole product, not a cut-down version: every feature, five seats, fourteen days. No card, so nothing renews and nothing is charged when it ends.
You need a work email address you can read now: the console has no passwords, so it sends a six-digit code to prove the address is yours. There is no card to enter, and nothing is charged when the fourteen days are up.
Four steps, and the longest of them is you deciding.
Give the console the name of your organisation and your work email, then type the six-digit code that arrives. That address becomes the administrator.
Five seats for fourteen days, open the moment you have signed in, and each person you invite holds one of them. The installers for every platform are on the downloads page, and the app offers each new version from inside itself after that.
Install, enter your work email, and type the six-digit code that arrives. One seat, one machine. Defaults → Licence shows where the seat stands and hands it back when you move machines.
Buy the seats you want at £8 each per month or £50 each per year, in the console, paid by card through Stripe. Or do nothing: the app goes read-only, your collections stay yours as files on your own disk, and nobody charges you for anything.