The picture is a little hard to look at with all the red/yellow circles and the inset etc. The bolt is not supposed to be there...it's definitely a temporary repair.
The fat hose goes to the larger port that should be labeled "vac" or "vacuum". The other end of that fat hose should connect to the source of the vacuum, usually the intake manifold.
The small hose(s) connects to the small port(s) and distributes the vacuum out to HVAC (blend & mode doors) and heater control valve as well as the cruise control etc.
If it's the football shaped reservoir, there are two functional ends which are separated by a "partition"...So, the source line should T off before the reservoir and be connected to the other end of the reservoir. If it's the round reservoir there is no T. Just a big port and a little port, one side
