I can see only the First & Last touch channel attribution models in my Adobe analytics account.
I would like to change it to other models like Time Decay & Linear. But, I don't find any option in the report suites to update this.
Could you please anyone guide me where I can modify this.
Got it. Attribution IQ is only available in WorkSpace and thus you are unable to see the same in Reports Interface.
From the Screen Shot, it is evident that Attribution IQ for your company is still not enabled. Mail to Customer Care and ask them to enable it for your company or reach your Account Manager regarding the same. That would suffice!
I have attached the image samples for your reference.
I couldn't find this in Workspace column settings.
Can you share the screen grab where you only see First and Last Touch Attribution Models? I suspect that you are not looking it right!