Question: 1) How to enter this equation? 2) Context Menu in Flow?

Question 1 - How would you enter this in Maple Flow 2022?

I can create "i sub C" by pressing "space+ underbar" two times

but I can'g get (t) ... the "function of t" to go with C as part of the subscript.

So, how would you enter this into Flow 2022?

Question 2 - I watched this video ... Taking Derivatives in Maple 15 and he demonstrates right clicking to get a "Context Menu" ... I was unable to get this to work in Flow 2022 ... should it work or is that feature only avaible in Maple?

Thanks for any help.

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