How about Exaktime? Check them out. They are familiar with Sage 300 CRE

We use hh2. It integrates nicely with Sage 300 CRE. Depending on how you want it set up and how much you want to spend, you can have each employee enter their time, or have supervisors enter time at the end of each day, etc. You can require an employee signature and can customize the disclaimer they are agreeing to when signing. Time can be entered through website and/or mobile app.

We use HH2 also.  Very simple to set up, explain, integrate, use.  We've been using it for at least 3 years.

We have been using HH2 for 15 years...Love it!