Hi @geoffr,
Moved your topic to FAQ's as it's a very general site question...
In answer to your question,
geoffr wrote: Hi, I would like to give other developers access to my Cook component, but don't want to give them my current user login details.
How can I change my login?
Yes, you most certainly can change your password in the forum by editing your profile although I'm not necessarily sure that you should do... This password could then be changed by your new user and you'd be locked out. Also, having access with your new 'temp' password would mean that the developer would have access to do anything to your component in the builder.
Of course, I'm not suggesting that anything untoward will happen however, I would suggest as an alternative that you give him/her a copy of your downloaded component or allow him/her access to a development environment that you have (if any).
Hope this helps,
Gez