Hello Roy Trapp ,
About your question, I have checked your picture , If you want to choose the data under "Clock rate index"
of Attribute set list, first you need to configure more than one "Clock rate" , in default , there is only one clock
rate setting , so there is no option we can use under it .
Open "Clock rate" configuration view, choose "list of values" in "Runtime settings type", then configre values:

After do this , you can use the "Clock rate index" list .
Hope it helps,
Have a great day,
TIC
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