Log into your account
From the Projects page, locate and open the Project you want to update the Category
The Project Details page will open
Locate the gray box, with the wrench symbol that says Category
Click the box
The Edit Project pop up will appear
Under Project Category, delete the current category by clicking the X
*If you do not see any other category options, you must update them in Company Settings
Using your mouse, click the white space
A drop-down of your other categories will show
Click the Category you wish to update it to
Scroll down and click Save Project
If you can not find the Project Category you need, make sure to check your Company Settings. Company Settings is where the options are stored.