Tempo - Allow some users see all the timesheet of other users

[Alessandro Mochi]

Quite simple: I am the admin, got 2 team leads, got 5 normal members. 3 belong to 1 TL, 2 to the other. How can I make it so that each TL can see the timesheet of his members?

If this is not possible, here is an easier one: how can the TLs see the timesheet of everyone else, to see what they did with precision? This may include seeing the other TL's work as well. 

I tried everything. They both have the same roles as I do, including JIRA admin roles. I'm the only projhect manager as I can't see how I can make them that role as well.