Adding Flags
Individual animal:
Go to the stock list and view the animal summary
Toggle the flags at the top underneath the tag numbers.
Group flag setting
Go to a group
Select animals (If you select 0 animals, it will apply the flag colour to all animals)
Press the floating action button in the bottom right > 'Settings on all group animals' > 'Flag Colour'
Select the colour
Flag setting via the stock list:
Go to the stock list
Select either all or some animals by tapping on them
Press the floating action button in the bottom right > 'More Actions' > 'Flags'
Select the colour
Filter by Flags
On the main 'Animal List' or in a 'Group' you can use the 'Filter' tool on the right of the search bar on the top of the screen.
You can the click into 'Flags' and filter the animals by flags.