Assistance in setting up a local network

Employer
[no-member:pro]Aleksey[/no-member:pro]Aleksey
Project parameters
Type of cooperationOne-time project
SectionAdministration
Prepaymentwithout prepayment
Payment methodsBank transfer, Electronic money
Acceptance of requestsclosed
Project description
The help is not specifically to set up a local network, but to set up some devices on that network. In a small office for 7 computers there is also a printer and plotter. So, with two computers out of 7, neither plotter nor printer works. We can't find a reason. We would be happy if there is someone who can solve this problem remotely.