Use software :pad designer
New pad file :file -> new
choice browse, You can choose the file path and name , The default path is the last saved location .
Then the job of creating the file is finished , The next step is to design pads
Unit settings , The metric system is chosen here :
Other options are set to the default value
choice layers, And check single layer mode( Express : Surface paste mode )
Here we only consider the pad size
Patch packaging here these three layers must be sized , The solder resist layer is generally larger than the pad 0.1mm
After the size setting is completed , Here you can go through view Options view pads
Finally, the motor file -> save Save it