I Need A Power Of Attorney Agreement Drafting

I Need a Power Of attorney/Letter or authority drafting and emailing to Director@purelifetonics.com for me and my partner to sign. The document should empower me to take any decisions and act on my partners behalf with regards to finances, contracts, agreement and legal decisions.
It should Instruct that MR Kevin McHugh-Barker of 6 alexandra wharf Grimsby can act on behalf Of Miss Candice McHugh-Barker of the same address. Also a second document should be drafted giving the revise of the permissions i.e Candice Can Act On My Behalf
I am only offering £20 based on the fact that I need a standard document template which i could obtain as a "legal Pack" from W H Smiths for £12.99 I post The Job For our Convenience Only
Thank You