Our Chair is writing a major proposal and me and my colleague are on-board (both non-tenured)... Chair has asked for a meeting next week to work on the bid for a centre and this colleague of mine has replied back to both of us accepting the meeting and on our behalf and has suggested working two-three full days for the Chair.
I replied to the Chair saying "sure lets meet" and didn't acknowledge anything else that was said. I am tempted to write to the my colleague and say I know they had the right intention but please never ever talk on my behalf again as its not professional. Is this the right thing to do?
I am worried if I don't react this will continue as I am new in my current job. On the other hand I am worried if I react by sending an email or verbal communication and asking them not do it they might just forward/talk with the Chair with some lame excuse like suggesting that I am really busy and unhappy and they will do it themselves to make me look bad or with the genuine intention of correcting their mistake which in both cases will make me look poor!
What should I do?