Yes, you can ... mist attorneys and CPA will have a limited power of attorney form that will allow them to represent you in many ways. Most will have a template that can be used ton limit their authority to exactly what you need .....
And for representing you before the IRS?
You would use this form Form 2848
Here's what IRS says regarding form 2848:
Use Form 2848 to authorize an individual to represent you before the IRS. The individual you authorize must be a person eligible to practice before the IRS. You may authorize a student who works in a qualified Low Income Taxpayer Clinic (LITC) or Student Tax Clinic Program (STCP) to represent you under a special order issued by the Office of Professional Responsibility. Your authorization of a qualifying representative will also allow that individual to receive and inspect your confidential tax information.
If you need furthr clarification or want to discuss ... I'll be right here
I still don't see you coming into the chat session, so I'll move us to the "Q&A" mode. … Maybe that will help … (We can still continue a dialogue there, just not in real-time chat, as we can here)
Let me know if you need anything else at all on this ...
in other words they can get my tax info for me