PLL Location

Hi! My question is, can I assign the location of a PLL in "Assignment Editor"?

For example, in EP2S60, clock feeds the fapg via clk12 pin, and I want an output pin for AD clock, which needs Zero Delay Buffer feedback, and several global clocks, which need normal feedback mode. The fitter placed the former pll on pll5, I know that is OK; but another pll was placed on pll6, just on bottom of the fpga. Can I assign this pll on pll11 manually?

Thank you!