1 - Go to the Operations menu and select Issues.
2 - Select the issue you want to create an Activity for.
3 - Select the Activities tab in the Issue.
4 - Here you will see a list of all Activities associated to this Issue. To add a new one, click on the Add Activity button.
5 - You will be presented with the standard New Activity screen, with Issue and Unit pre-filled in.
6 - Fill in the remaining required details and select 'Save Activity' when you are done.