Mobile:
Click More in bottom right corner
Click Vendors
Select Vendor to use in new Work Order
Click 3 dots (⋮) next to Edit in top right corner
Select Use in New Work Order
Add details of Work Order
Click Create in top right corner
Web:
Go to Vendors tab
Select Vendor to use in new Work Order
Click 3 dots (⋮) next to Edit in top right corner
Select Use in New Work Order
Add details of Work Order
Click Create in bottom right corner