NOTE: Any Custom Fields added to Work Orders can be filtered.
Mobile:
Go to Work Orders tab
In top right corner, click Filter icon
To right of My Filters, click Select
Select from Custom Fields (now Filters) previously added to Work Orders
Click Apply
View filtered Work Orders
Web:
Go to Work Orders tab
Click +Add Filter
From drop-down menu, select from Custom Fields (now Filters) previously added to Work Orders
View filtered Work Orders as filter options are selected