[TimeQuest] How report clocks and missed Constraints?

Generated clocks usually come from a pll, so the derive_pll_clocks command is what you use to define them automatically.

If your clock signal comes directly from a fpga input pin or it is generated by a divider or any other method involving logic gates (but remember, it is a bad practice to create a clock signal this way) you have to define the clock manually, since TQ can't infer the clock period.

Regarding the first question, what's the problem?

Reporting clocks and unconstrained paths are straightforward operations in TQ; these are the very first basic commands you should have leart.

Did you take a look at the tutorial?