Years ago I worked for a company that did the pinspot centerpiece. Frequently we would wait until the tables were placed before we would focus the lamps. A-Frame ladders are easy to move about short of chairs in the way and the goal is that center piece on the table which if done right a pinspot often does well and economically.
Not so sure about this moving light concept for each table, cost of
fixture, time to focus each remotely from the light board which ain't local, and beyond that the pinspot has a certain beamspread and look to it. If mostly not right above the center piece or at desired angle to it, a table if moved and two feet away won't look the same short of moving that
fixture no matter what you do to refocus that mirror as it were. Not my style of lighting but did about a year of such lighting and it did have its certain look to it.
In my experience, the table rental company or those setting up the tables set them up according to a
plot that the lighting company also has in design. Pre-hang the lights according to the
plot and during focus after the tables are in place and even after the center piece you are to light is in place, come back to focus those lights. At that
point with out chairs or chairs moved out of the way it is easy enough to say move the table some or move the
fixture but definately touch up that focus onto the focus. Following all set and ready, a broom handle is useful especially if say it is say a
stage brace or double hook coat hanger on it's end so as to also move about the
yoke if needed.
Such gigs not a hard thing and I don't think moving lights required for more than the
flash and trash part of it. This much less just because you can refocus it remotely doesn't mean either from a remote position you can focus onto that location properly or that if the
fixture is hung at the wrong angle, any ability to refocus it will help light what is a down light type lighting short of moving the
fixture from its position.
Yea, typically we would have lamp bars of pinspots and they would be at angles, given that a moving light if also at an angle could do so, but so much more expensive, much less not able to side arm or
rooster out towards that focus. In general one moving light per table I would think not needed and cost prohivivite.