You can find your active Minding Requests in the menu, both requests you have made and also those you have offered to help others with.
For each request you can see the number of offers that have been made so far, along with the state of the task and if you have confirmed someone that can help.
Viewing Offers will show a pop-up with those that have offered you help. You can view their profile to see if you feel it is a fit and see their ratings and reviews. You can then choose to decline offers or confirm the one you would like to accept.