or, you can just use boolean arguments:
cond: wp1
radio call: wp1=true
As to the others:
time: make a trigger, and make the condition to something which is set to true when the unit reaches the waiting waypoint (for instance a Present trigger), and then give it a timeout (in the small boxes labeled Min Max and Med, short for Minimum, Maximum and..uhm, Medium
). This timeout is in seconds, just put the same amount in all boxes for an exact count.
other unit: just put the wp1=true into the other unit's trigger/waypoint on Activation field.
Problems? Just complain, and we'll be right on it
G'luck...
Wolfrug out.