Recommended project directories structure

I am new to Cadence software. Before starting working on a large project, I would like to know if there is a recommended or most common structure for the directories and files.

One option is to a single directory and all the files in there, but it does not look very convenient for large project. Another option is to have global directories for footprints, symbols, etc. This works fine for a single project, but with multiple projects then everything gets mixed.

In other EDA software tools I usually set up things like this:

```
.
├── libs
│   ├── lib_1
│   │   ├── 3D
│   │   │   └── a.step
│   │   ├── a.footprint
│   │   ├── a.symbol
│   │   ├── b.footprint
│   │   └── b.symbol
│   └── lib_2
│       ├── 3D
│       │   └── a.step
│       ├── a.footprint
│       ├── a.symbol
│       ├── b.footprint
│       └── b.symbol
└── main.project
```

which is very convenient because 

1. It remain local to the project and
2. if I reuse say `lib_1` in another project, I can simply symlink to it and use it without duplicating information or having to update any path.

I tried to setup something similar for Allegro X but ended up having a lot of issues with the paths. Right now I have everything in a single directory, but I see an inconvenience when the project starts to grow.