gb755cs, You should setup the system before connecting and setting up the dock. Also,  make sure you update the docks firmware if one if available from here.
So my parents have been using a decommissioned Dell Optiplex desktop that was originally designed for Windows Vjsta with an intel Core 2 duo. It’s showing signs of reaching its end got it to run windows 10 but it’s limping.  I used my Dell preferred account and ordered an Inspiron 3000 laptop with a Dell D3100 universal dock since they want to be able to use an external monitor and have access to more ports. When they arrive tomorrow according to fedex should I do the initial windows 11 setup and other updates before connecting it to the dock or does that not matter?  I just want to make sure everything goes off without a hitch. Thanks 
Inspiron 3000 initial setup