Can I authorize someone to maintain my research data?

In general, researchers are best placed to keep their own profiles up to date. 
If you ask a colleague to maintain your research data for you, never share your credentials!
Instead, you can make your colleague a trusted user:
Click your P-number at the top right corner of Pure → Trusted users → Save.
Enter the colleague(s) who you want to make your trusted user(s). 
This will allow the trusted user to maintain your research data once they have logged on to Pure.