To add a new activity you enter Edit mode by clicking the Edit button and then click on any of the existing activities' plus button. This will create a placeholder and then you use the activity panel on the right to select the underlying action, flow or template you want to add.
When you have 2 linear activities (no conditions between them) then the plus button to add a new activity between them is disabled. If you need to add another activity in between 2 linear activities then untick No Output Conditions on the bottom one and this will enable the plus button. Then add the new activity and move the bottom one under the new activity added. Finally configure the conditions, if any, between the new activity and its parent.
Updated 3 months ago