Make sure your team is skilled and trained in using the basic functions of their computers as efficiently as possible.
Possibly run some short workshops on the use of keyboard shortcuts, quicker ways to do things, etc.
Put together a simple list of commonly used tasks that have easy shortcuts or quicker ways to do it. Such as using the windows + E keys to open a file explorer window.
Some people open many copies of folders or programs whereby their task bar is full of small tabs that are too small to show the title. This is useless. They should only open as many as can still be read.
The increased efficiency accross the entire office based side of a project can by substantial. Individual people can increase their efficiency by up to 30% or more.