There are so many aspects to that.
First you need to think about your object templates (templates for parts, assemblies, drawings...) Discuss within the team what layers, parameters, units, etc. need to be included in part and assembly templates. So much learning here required.
You need to customize config.pro. It's a confiuration file that controls the working environment for the software. Many variables there will be of great interest to your company. Config.pro will aaplied globally to the organization and then copied to individual client machines to further pesonlization by each user.
anyfilename.dtl that controls detail options for your drawings.
config.win on each client machine to personalize interface.
Set up directories for libraries of different items (tables, notes, symbols, materials, graphic library, object templates, and many more) Each path is defined within config.pro with an option.
I don't mean to overwhel you here but you're talking about at least a week of work for customization - impossible to describe in a forum.