There are a few different ways that you are able to add more information to FOND to achieve a design that is both cost effective and quick to produce but also matches reality.
One the design has run, you can then select 'Move equipment' to change the location of the T2 Cabinets or T1 Closures. To have the cables update, select 'Update design' once you've finished moving the equipment and your design will be regenerated. The design should run a bit faster the second time because FOND doesn't need to spend time considering where the best places for each T1 Closure and T2 Cabinet are - they've already been chosen.
Paths to preference and avoid
Often you want to be able to tell FOND which sections of the aerial or underground path are good or bad. To do this, select the section of aerial or underground path, and choose whether to 'Avoid' or 'Prefer' that section.
If you have a particular path in mind, you may have to 'Avoid' some sections to discourage the old route, and then use 'Prefer' to make sure FOND uses the route that you'd like.
The image below is the cable path before applying specifying 'Avoid' or 'Prefer'.
Comparing this image with the one above you can see how FOND has now routed the T3 cable along the preferred route while avoiding the old route.
One thing to keep in mind is that sometimes you might only want to avoid a small section of a feature. In the GIF below, I initially select a section of road to avoid but FOND selects the whole street.
However, we may only want to avoid the southern half of that street. To do this, we need to use the editing tools to split that street in two so that only the southern half has the 'Avoid' symbols.
This will mean that FOND will still be able to go up that southern section of road if it needs to (e.g serving drops), but that it won't run a Tier 2 Cable from the south, it will come from the north instead.
Updating the input data
Sometimes the best way to get control is by editing the input data to completely restrict what FOND can do and make sure it has the most up to date information. This is well described in the articles all about editing address, underground or aerial data.