My old boss gave me a load of shit for writing down tasks that I had to do. He just couldn't comprehend that it wouldn't stick if it wasn't written down.
He took my book from me, and then asked me to do a bunch of complicated stuff each with its own deadline.
He then got annoyed when I didn't do the stuff because I hadn't written it down because he took my book.
He got sacked, I got promoted.
In terms of infosec, it's better for each to have it's own account as you don't want any linkages to other organisations with your data.
It's a gigantic pain in the hole though when you use a password manager.