There are two ways to select multiple items:
1. Select one item (if a text box, be sure the outline is solid) then hold down the shift key on your keyboard and click on the other item(s) you want to select.
2. Click and drag to select all the items in one big swoop. For example, click on the top left corner of the label or card, then drag to the bottom right corner. Everything insideĀ will be selected.
These work great for moving everything at once, and for Copy and Paste.