Not able to create employee as supplier.

Reason: In Create Supplier page, there is only one option"Supplier Type = Standard Supplier".

To Enable this,
Go to System Administrator responsibility, Navigate to Application->Menu
Query Menu name "POS_HT_SP_FULL_ACCESS_MENU"

You can see the function "Create/Update employee supplier details" is not granted to this menu(Grant Check box is unchecked).

Check this option and save the form.

Go back to the Create Supplier page, Now you can see Supplier Type field populated by two values