To navigate to the Settings page, navigate to your User Name in the top right hand corner of the screen, then select the drop down arrow next to your User Name, select Settings from the drop down menu.
Once you’ve opened the Settings page, select Users from the options on the left.
Here you will see a list of Users within your current Organisation with some key identifying details. Find and select the User you wish to edit. If you have a number of Users within your Organisation you can use the filter to help narrow down your search.
Once you've selected the user, you will be presented with their profile information. Here you will see all the details relating to that individual User. Update/Change any details necessary and once you've done this, double check you've entered the information correctly and then click the Update button at the bottom of the pop up.