Synchronous Operation of Two Motors with VBL2360

I am having an actuator which is connected to two motors. I want to move these two motors simultaneously and at the same speed so that one motor does not load the other. I have VBL2360. How Can I achieve this ? Also, in Roboteq Application Software there is an option "JOIN". What would be the command string on RS232 mode for the same. While option "JOIN" selected, one motor is stopping after the other motor.

I want to operate the actuator in relative position mode.

If the two motors have identical characteristics and are connected ot the actuator with the same gear ratio, then configure the first motor in closed loop and the second in open loop

Then use a short Microbasic script to read the power that is applied to the first motor and apply that power to the second.

The script will look something like this (untested):

top:
Motor1Power = getvalue(_M, 1)
setcommand(_G,2,Motor1Power)
wait(5)
goto top