Once you have added an objective to the development plan, and an activity underneath the objective.
Find the objective, select the activity's edit pencil
Once selected, find the Training and Development Tab.
Select 'Click here to add a new item'.
In the text box 'Support (CPD)', add the title of the CPD.
Add the training outcome, from the drop-down staff list select the lead, and then finally add a cost.
Select save.