\item For $\Uk$ we need to define for $f : \calV(UB,UB')$ a morphism $\Uk f : \calE(FUB,FUB')$. This is simply given by the functorial action of $F$: $\Uk f = F(f)$
\item Similarly $\Fkl = Ul$
\item Similarly $\Fk\phi= U\phi$
\end{enumerate}
Functoriality in each argument is easily established, meaning for
example for the function type is functorial in each argument:
\begin{enumerate}
\item$(l\circl')\tok B =(l' \tok B)\circ(l\tok B)$
\item$(\phi\circ\phi')\tok B =(\phi' \tok B)\circ(\phi\tok B)$