That's not a basic question - you want a magic trick to analyze a group of components and solve a spacing problem.
What is even spacing? Is it measured centre-to-centre or placement having equal gaps?
For a first try, I'd array hotspots along the alignment line and place the different objects individually.
If you want a simply-measured offset for additional elements, consider the Divisions tool with a specific distance entered.
The Distribute tool will evenly distribute elements along a line or edge, based in centers.
Dwight Atkinson