RS Mediapool library options

Hi, I am working to make a 3x IRB 2600ID + IRBP-R arc welding station and when I try to make the operation system from lay-out, the system can’t find a mediapool structure for 3 robots and a table.
The result is a OS with the three robot and no IRBP-R.
Where can I get this special configuration option to add to my mediapool library?