Continuous pulse train generation from two counters from PCIe6363 synchronized with external 10 MHz clock

[sugar7]

Dear community,

I'm trying to generate continuous pulse trains from two counters of PCIe6363 which is synchronized with an external 10 MHz clock.

After reading manuals and topics, this looks possible and I want to make sure what I'm doing now is correct or not.

The 10 MHz clock goes to, let's say PFI9, and on Labview it is connected to RefClk.Src of DAQmx Timing node and RefClk.Rate is set to 10 MHz.

Is this all what I need to set?

I have two counter tasks and only one Timing node is enough? 

When I set the same Timing nodes for each task, I got an error, so one was removed.

Both counters use 100 MHz timebase and are they synchronized with the external clock?

If something is missed here, please let me know.

Thank you so much for your time and kind help.

best regards