Trying to move from Google Sheets to #LibreOffice Calc and finding I need to relearn basics and retrain my muscle memory...

- Enter -> F2 to edit a cell
- Still no idea how to edit an array formula

Can I edit transparency for multiple lines at once for a graph in #LibreOffice Calc? It's so tedious to select and edit them one-by-one when I have a ton of series...
Or maybe there's some way to edit a default style, so when I create the chart they'd already have the transparency I want?