What is better to use Tasks or Projects?

Question

CRM

The people, the question is sophisticated in CRM and software.
Gradually I am trying to establish work in a civilized and convenient way, but questions naturally arise.
1. There are several brigades (construction topics)
2. There are orders that we accept through different channels
3. How to properly plan the work of brigades if all objects are different in complexity, in terms of timing, etc.
We understand the approximate time that is required for a specific object, only in the calendar everything is mixed up in a heap and it is not clear which team is released and which one can be loaded.
What is better to use for such purposes?: Tasks, Projects, Calendar
CRM Onlyoffice
Terms of work from 2 days to two weeks
You need not to get lost in this mass of information - you need visibility and reliable time management

Answer 1

in general, this is more of a production outfit.
here
https://www.facebook.com/
there are outfits and a calendar and accounting for equipment and write-off of consumables and an act of work performed
there is also a module of projects and tasks, but this is more for intellectual work at a computer - such as software development design and so on