Hello Jim. I’m not the one to answer how they are named ahead of time but changing is very simple. Once changed each time you revisit that anchorage it uses the new name you assigned to it!
First click on the Log with that anchorage that you’d like to rename.
Second click on the name to be changed and you’ll notice that you’re able to edit it in that field.
Rename it then click Done and that’s it!
I hope this was helpful
Kevin
Saillogger