If you want to create new HR infotype, called customer infotype you need to follow through steps specified below.
REMEMBER that your new infotype key should respect naming convention: numerical range 9000-9999.

This site will be updated with more detailed description and system screenshots, so come back soon!

How to create customer infopyte:

• Go to Transaction PM01
• Enter the custom Infotype number which you want to create (Should be a 4 digit number, start with 9).
• Select Employee Infotype radio button
• Select the PS Structure Infotype radio button placed in Subobjects group-box
• Click on Generate Objects button (on right, next to Infotype no. edit box). Click Create on the Create Dictionary object pop-up window, to create PS structure for your infotype.
• Create a PS structure with all the fields you want on the Infotype
• Save and Activate the PS structure
• Go back to the initial screen of PM01
• Click on All push button. It takes a few moments
• Click on Technical Characteristics. Infotype list screen appears
• Click on Change(pencil) button
• Select your Infotype and click on Detail (magnifying glass) button
• Give T591A as subtype table
• Give T591S as subtype txt tab
• Give your subtype field as subtype field
• Save and come back to PM01 initial screen
• Click on Infotype Characteristics - Infotype list screen appears
• Click on Change (pencil) button
• Click on New Entries
• Enter your Infotype number and short text
• Here we have to set different Infotype Characteristics as per the requirement. (Better open another session with some standard Infotype's infotype characteristics screen and use as the reference to fill yours)
• Save your entries
• Now the Infotype is created and ready to use
• If you want to change the layout of the Infotype as per your requirement...
• In the PM01 initial screen Select Screen radio button and give 2000 as the screen name, then click on edit
• In the next screen.. Select Layout Editor and click Change
• Screen default layout appears - here you can design/modify the screen..change the attributes of the fields..etc
• Save and activate. (Don't forget to Activate at every level)

Find more about configuration and list of all HR infotypes on dedicated page.