How do I create an Inventory session?

Go to Tools > Inventory, then select Session at the top. Click on either the + in the bottom left, or Create Session. Give the session a name and set the Inventory By to be how you want to split the sessions. If you use call numbers as the Inventory By, you will need to make sure that in both the From and Through fields, there are the exact same number of characters–for example, From 222.222 Through 333.333, and not from 222 through 222.999.