1) Select Edit Marchers

First login to your account, and select Edit Marchers under the Show Options menu.

2) Edit marcher information

You can edit the Symbol, Display Name, or Name columns. The symbol is used to change the color under Show Options->Edit Colors. The Display Name is the text that shows up on the dot. The Name is the name of the marcher, and will be shown in the popup window after clicking on a marcher. When your are finished, click the save button