Hi Caroline, I have an attempted answer to this question in our FAQ (link to that is in the right sidebar of every page, FYI).
We would generally prefer if you don't remove our logo unless you are really chaning the content and making the sheets your own. Putting your logo on a sheet we created could make it seem like something you created. You can definitely share them with your team, but as stated in the FAQ, we like people to sign up for LEEDuser as teams much as possible to get direct access to advice and templates as we update them.