From your MiCollab client, please click your name in the top left corner and select "Manage account"

From the window that pops up, next to your picture, you should see check boxes for 
"Automatically run MiCollab Client when I log on to Windows.

    Checking this box will automatically launch the MiCollab Client when you first sign into your desktop.

"Automatically log me in when MiCollab Client starts."

    Checking this box will automatically sign you in to the MiCollab Client when it opens.


Both options work independently, so you can have it sign you in automatically but require you to start the program manually. You can also do the opposite and have it start automatically, but require you to sign in manually.