Open the Card you wish to create a log for and press the three dots in the top right cornerthen "New Log".

Give your Log a Name, date and choose if you need any cameras added (numbers and letters available) 

It will also give you the option to create shortcuts.

Click "+ Add Shortcut" to add a new shortcut.

To add a Shortcut to an existing press this button once inside it 

Clicking on the shortcuts at the top while logging, will automatically add them to your log, or you can hover to see keyboard shortcuts for them. 

To add the same shortcuts to every log in your Project, Go to settings then features  and select "Shoot Log".