Once your designer has invited you to view your project in Gather, you will be sent an email that looks similar to the one below.

Click on "Accept invitation", and you will then be taken to the screen shown below. Here you will need to set a secure password and then click "Set My Password". 

*Please Note: Once you have accepted your Gather invitation, you will no longer be able to log in using the link in the email. Please log in from our Sign In page here: https://gatherit.co/users/sign_in