- factually explain the problem to your boss, with concrete examples
- provide solutions
- provide opportunity for discussion
- do whatever they ask
"Explain how your time is now being spent. Explain what additional work you are doing, and how it impacts the remainder of your tasks. Ask if this is how you should be spending your time, or if you should be doing something different." <-- If you have a good boss, they should want to know how you would prefer to spend your time as well. Don't be afraid to state your own preference, while making clear that you're willing to be a team player and do what the team needs you to. – PurpleVermont
The fact that you're on a Stack Exchange network means you're probably above average. Average people just bring their boss' problems. The top performers bring problems and solutions.
You've noticed a problem - that you're spending a bunch of time doing silly/menial tasks that other people could do most of the time (and probably in less time that in takes to ask you to do the dang thing in the first place). Now you get to bring your boss the problem and several possible solutions. What I've found works well for me is to talk to my boss (or other responsible parties) and say, "Look, here's what's going on..." and then clearly and factually explain the situation. That means no, "All these other jerks are wasting my time," but more, "I find that I'm spending X hours a week doing Y - this last week I was asked to do several simple tasks, like renaming columns, sorting some rows, and so forth. This takes away from the time that I could be doing Z. My preference is to be frobnosticating the fizz buzz, but I'm happy to do whatever helps the most. I can see a couple of options here.
1) Keep doing these simple tasks for people (like renaming columns, sorting rows, etc.)
2) I would be happy to train other people on a 1-on-1 fashion, or in a class, or write up some documentation
3) I can just let people know that I'm not available for such simple tasks
What would you like me to do? Or is there something that I'm missing? "
I'd say that you do usually want to allow for the fact that you're missing something. There have been many times that I've thought I knew everything, but there were some strategic goals that I was unaware of.
By providing solutions you're not just adding another problem to your boss' plate, but you're working with her/him to solve a problem that's bigger than you. A good employer will appreciate that. By offering the opportunity for your boss to provide another solution you're not coming across as arrogant, but willing to learn. And it's a good thing not to insult other people, because maybe they were having problems doing something that you view as simple and your boss just said, "Take this to Joe, he'll help." Then you've unknowingly insulted your boss and I'm sure that's the last thing you want.