I am helping in writing a systemic review and Meta analysis. I need to calculate the complication rate. what i have is ??

Study, number of procedures done, number of complication observed and event rate??

I need to create a Forrest plot and and 95%CI.

i have access to revman and Statsdirect but confused what option to select and how to approach the overall question??

below is a little example

Study name N of procedures Events rate

ABCD 74 11 14.9

EFGH 30 0 0

CHFB 44 2 4.5

any kind of explanation would be highly appreciated??