From your 'My Hub' page (please see below)
If you go to the 'Menu' icon in the top right...
then select 'Contacts' from the options
Click a client profile
Followed by 'Assignments' from the list below the client profile picture and then 'Workouts'
If you then switch to 'Created' from the options at the top
You will be able to see any 'Created Workouts' which your client would have made themselves